Partlist: 
Intel i5-4690 @ 3.5 GHz
EVGA GTX 770 w/ACX Cooler 2GB
Asus Z97-A ATX Mobo
750W Antec PSU
8GB RAM 
CoolerMaster Aftermarket CPU Cooler
 
 
I have been having some problems with my Computer Recently. While playing games I get these random millisecond stuttering. Games run fine with very high FPS, but there are still these millisecond stutters which are very noticeable. I have tried many things, updating drivers (They are all updated, and I even tried downgrading to no avail), etc. but nothing seems to stop these stutters. Any ideas on what may be causing these stutters? It is not overheating as I monitor Temps at all times.
 
Games I play: TF2, Minecraft, Just Cause 2, Skyrim, and some others.
 
Update: My friend built a similar PC with a more upgraded GPU, better Power Supply, and better CPU. His computer doesn't have stutters at all. I will try and see if I can test his parts in my PC.

m4tthu
Hi,
A good friend of mine is having the exact same issue with his 770. The card is the only hardware that you both have in common.
Any updates? I have been troubling shooting his system since last week with no luck. At the most I have narrowed it down to being the card. But he was kinda hoping to find a solution or fix for it, instead of just replacing the card. 
Thanks

I have not, but I am happy not to be alone here. I know a couple of things that lowers the amount of lag spikes. In nVidia Control Panel, set the Max pre-rendered frames to 1 exactly. Then get CCleaner, and run the Registry Cleaner. While it doesn't completely fix it, it surely helps it tremendously. Will definitely give an update if I find the problem and fix it. Oh by the way, when this lag occurs, in MSi Afterburner, it shows in Frametime a spike.
 
What are your parts?

Sajin
Try installing driver 331.82.

Have tried this. Just a while ago. Didn't do anything, infact it seemed to increase the amount of lag spikes I was receiving. 

Sajin
Is your CPU overheating? Have you tried performing a of windows to see if it helps correct the issue? Have you scanned your PC lately for viruses? 

No CPU overheating. I will try a clean boot of windows actually now. And my PC does not have viruses, have Microsoft security essentials and MalawareBytes. Scanned using both, and nothing found.

Sajin
Do you disable both MSE & Malwarebytes before playing? If not, you should.

Yes I do. Still occurs. I have done a Clean boot with no luck.

Anyone? Please?

Since I still have yet to send it in, I want to give an update. I still believe it is the GTX 770. Here are some other games I tested:
Borderlands 2: I get lag spikes every now and again. It seems to be random.
Chivalry: Now this game has it terrible. Whenever an objective is completed, a 2-3 second lag spike occurs. This lag spike brings it down to 0 FPS by the way, freezing the game completely, like all other lag spikes. It is really ANNOYING. Sometimes, just randomly, one will occur.
World of Tanks: When a game starts, it freezes for a second, and whenever I look around/move the tank it sometimes occurs.
Portal 2: If I place my first 2 portals after loading in it causes a small freeze, and sometimes while loading areas it freezes for a millisecond.
Team Fortress 2: Same as Portal 2: While looking around it causes millisecond freezes.
 
Before I send it in, any ideas on other hardware that may be causing this? I don't want to send in a working video card if that is not a problem. I have tested Intel HD 4600, but that is such a terrible card that testing it wouldn't even be a good idea.
 
When the lag spike in Chivalry occurs (for like 2 seconds) the GPU usage spikes down to about 10-5% or even lower! But that is because the lag spike is so long.

Anyone know what the cause of this might be? I just can't figure it out and it's driving me nuts.

Sajin
Do any of the games lag when just idling inside them?

I do not know, but I know it isn't caused by mouse lag or keyboard lag because the framerate actually drops. It does happen when just moving forward without turning at all. And I know it isn't internet lag because it happens lag/or no internet lag (AKA in singleplayer games too)

I'm thinking some software on your machine is causing the issue. Do you have geforce experience & asus ai suite installed? If so, uninstall them then reboot the PC and retest. Are you running windows 7? If so, uninstall update KB2670838 too.

NarbiusTheGreat

Sajin
I'm thinking some software on your machine is causing the issue. Do you have geforce experience & asus ai suite installed? If so, uninstall them then reboot the PC and retest. Are you running windows 7? If so, uninstall update KB2670838 too.

With or without GEForce Experience, causes the lag spikes. I never installed Asus Ai Suite before. I tried my iGPU too, which still causes the lag spikes so I presume this isn't a GPU problem. I will see if I have that update and uninstall it if so.
 
Also idling in game (not moving the mouse or using the keyboard) seems to cause the lag spikes too. 
 
I do not have that update. I barely have any infact because I did a complete reinstall of windows to see if it would fix the lag spikes, which it didn't.
 
Thanks for the post!

No problem. Could you try idling inside the game with all USB devices disconnected to see if the stutter goes away? 

I have some more news. While the internet does seem to increase the amount of lag spikes I get, it still gets some with/without the internet adapter. Weird. 
 
While playing Garry's Mod, the more items I have around, the more lag spikes I get. So if I have no items on a giant map, and walk, barely any lag spikes. If I place like 20-10 bouncy balls, or some couches, I start getting this weird much different lag spike. This lag spike isn't random, it spikes every about 4-5 seconds, and every other spike causes a double spike. What I mean is it goes like this - Spike, 4 seconds, Spike, Spike, 4 seconds, Spike, 4 seconds, Spike, Spike, 4 seconds... etc. Just like that. With or without the internet adapter. Could someone else test this in Garry's Mod using a iGPU? It could perhaps be my iGPU (Since I am still awaiting my 770 to come back after I sent it in because I thought that was causing it)
 
Also, those lag spikes don't occur in Chivalry anymore. Updating drivers and all seems to have fixed those weirdly enough.
 
Games I notice with lag spikes still (Top is highest, bottom is lowest):
Garry's Mod -Almost unplayable
Space Pirates and Zombies -Whenever something speeds into the screen, I click on the radar map, whenever anything happens pretty much. Still playable though.
Team Fortress 2 -Very playable, barely happens, but still noticeable. Happens a lot in MvM especially whenever a wave starts.
Portal 2 -Doesn't happen close to as much anymore. Very playable.
 
I am gonna try uninstalling some things. Maybe Steam is causing it after its update? Who knows. No idea how I would test games though without Steam.
 
I think I have something to sum up this lag spike. Something is making it so that whenever something loads into the game, even though it is a small thing, or something that may have already loaded before, it will cause a lag spike. No matter what. The more things loaded into the game, the more lag spikes I get too, even if it isn't loading these things. I know loading would cause lag, but I don't notice this on other computers. I don't notice it on youtube videos. If this helps you pin point what may be causing it, please say so! It would help me a bunch!
 
Oh yes and disconnecting all USB devices does not fix the issue. 

Check your PC for DPC latency issues using LatencyMon.

Apparently I have 33k Hard page faults in msmpeng.exe. I have attempted to end the process, but it doesn't allow me to. I believe it is my anti-virus software, Microsoft Security Essentials, but with or without it still causes lag spikes.

Sajin

NarbiusTheGreat
After trying out that program and running a test, it appears to say- My computer is having trouble handling realtime audio and other tasks. Hmmph. Could this be the root issue?

Yes.

NarbiusTheGreat
Apparently I have 33k Hard page faults in msmpeng.exe. I have attempted to end the process, but it doesn't allow me to. I believe it is my anti-virus software, Microsoft Security Essentials, but with or without it still causes lag spikes.

You can temporarily stop the hard page faults by disabling the page file for testing. Pay close attention to the ISR and DPC execution times as well.
 

Hmm. Well it's good that we found something that can actually see what the issue may be.
 
Here is the log file thing:
 
_________________________________________________________________________________________________________
CONCLUSION
_________________________________________________________________________________________________________
Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates.
LatencyMon has been analyzing your system for 0:02:05 (h:mm:ss) on all processors.

_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: CLASSIFIED
OS version: Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
Hardware: All Series, ASUS, ASUSTeK COMPUTER INC., Z97-A
CPU: GenuineIntel Intel(R) Core(TM) i5-4690 CPU @ 3.50GHz
Logical processors: 4
Processor groups: 1
RAM: 8133 MB total

_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 3500.0 MHz
Measured CPU speed: 4087.0 MHz (approx.)
Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.

_________________________________________________________________________________________________________
MEASURED INTERRUPT TO USER PROCESS LATENCIES
_________________________________________________________________________________________________________
The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.
Highest measured interrupt to process latency (µs): 6969.889888
Average measured interrupt to process latency (µs): 1.703553
Highest measured interrupt to DPC latency (µs): 160.328240
Average measured interrupt to DPC latency (µs): 0.477719

_________________________________________________________________________________________________________
REPORTED ISRs
_________________________________________________________________________________________________________
Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.
Highest ISR routine execution time (µs): 103.3780
Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Highest reported total ISR routine time (%): 0.211413
Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft Corporation
Total time spent in ISRs (%) 0.277075
ISR count (execution time <250 µs): 351633
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 0
ISR count (execution time 1000-1999 µs): 0
ISR count (execution time 2000-3999 µs): 0
ISR count (execution time >=4000 µs): 0

_________________________________________________________________________________________________________
REPORTED DPCs
_________________________________________________________________________________________________________
DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.
Highest DPC routine execution time (µs): 321.613714
Driver with highest DPC routine execution time: nvlddmkm.sys - NVIDIA Windows Kernel Mode Driver, Version 337.88 , NVIDIA Corporation
Highest reported total DPC routine time (%): 0.271616
Driver with highest DPC total execution time: iusb3xhc.sys - Intel(R) USB 3.0 eXtensible Host Controller Driver, Intel Corporation
Total time spent in DPCs (%) 0.543250
DPC count (execution time <250 µs): 1126104
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 16
DPC count (execution time 1000-1999 µs): 0
DPC count (execution time 2000-3999 µs): 0
DPC count (execution time >=4000 µs): 0

_________________________________________________________________________________________________________
REPORTED HARD PAGEFAULTS
_________________________________________________________________________________________________________
Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.
NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.
Process with highest pagefault count: msmpeng.exe
Total number of hard pagefaults 1269
Hard pagefault count of hardest hit process: 1256
Highest hard pagefault resolution time (µs): 8687.884286
Total time spent in hard pagefaults (%): 0.048432
Number of processes hit: 4

_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s): 4.510567
CPU 0 ISR highest execution time (µs): 103.3780
CPU 0 ISR total execution time (s): 1.394065
CPU 0 ISR count: 351633
CPU 0 DPC highest execution time (µs): 321.613714
CPU 0 DPC total execution time (s): 2.600647
CPU 0 DPC count: 1075097
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 0.583872
CPU 1 ISR highest execution time (µs): 0.0
CPU 1 ISR total execution time (s): 0.0
CPU 1 ISR count: 0
CPU 1 DPC highest execution time (µs): 100.046857
CPU 1 DPC total execution time (s): 0.050859
CPU 1 DPC count: 15224
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 0.400952
CPU 2 ISR highest execution time (µs): 0.0
CPU 2 ISR total execution time (s): 0.0
CPU 2 ISR count: 0
CPU 2 DPC highest execution time (µs): 103.311429
CPU 2 DPC total execution time (s): 0.044957
CPU 2 DPC count: 17788
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 0.380293
CPU 3 ISR highest execution time (µs): 0.0
CPU 3 ISR total execution time (s): 0.0
CPU 3 ISR count: 0
CPU 3 DPC highest execution time (µs): 250.1480
CPU 3 DPC total execution time (s): 0.036824
CPU 3 DPC count: 18011
_________________________________________________________________________________________________________
 
Hopefully this helps find the issue! Thanks so much for the replies by the way :)