PPD will vary from project to project.  There is an artificial "spike" with PPD on a first time run.  It will settle out over 24 hours or so.  Also Windows 10, or windows in general, has a performance hit for PPD when compared to a Linux based machine.  So if you are trying to compare numbers that some one has posted previously see if they may be running a Linux OS and Folding from that.  Drivers can have some effect as well.  I'm sure some of the users here will have specific driver recommendations that are optimal for the GTX 1080ti.  All of my GTX 1080ti's and my GTX Titan X Pascal run in the 800-900 range running Windows 10 with updated drivers and GPU utilization in the %80-90 range.  I don't tune them specifically for folding as I regularly use my machines for other tasks like gaming and such, and also why I'm not running a Linux OS which could be up to a %20 gain in PPD.

It depends on the work unit as well.  94xx WU will not use your 1080Ti at all, I usually see mine sitting around 70-75% if that, when these WU are abound.  With the current 114xx WU you will see your cards get used more, but these WU are rare.  Very rare.  Linux will give you a 15-20% boost in score, as the overhead in windows seriously is massive, so if you can, switch.  It also does not need anywhere near the CPU resources to feed the GPUs in Linux as it does in Windows.  
 
As for the work units stopping the cards from reaching max, it more has to do with the way that the windows drivers are created, and the fact that the work units are designed for Fermi architecture.  There is a very long post about it on the folding forums, but basically windows is horrible for what folding is doing, and you should avoid it at all costs as the overhead, as mentioned above, is massive.  To give you an idea I have a 1080Ti in Linux on a potato system, A6 5200, and it's currently rocking 1.4m ppd.  When it was in windows and it had a 1080, it would not even do 400k ppd.

Ranmacanada
It depends on the work unit as well.  94xx WU will not use your 1080Ti at all, I usually see mine sitting around 70-75% if that, when these WU are abound.  With the current 114xx WU you will see your cards get used more, but these WU are rare.  Very rare.  Linux will give you a 15-20% boost in score, as the overhead in windows seriously is massive, so if you can, switch.  It also does not need anywhere near the CPU resources to feed the GPUs in Linux as it does in Windows.  
 
As for the work units stopping the cards from reaching max, it more has to do with the way that the windows drivers are created, and the fact that the work units are designed for Fermi architecture.  There is a very long post about it on the folding forums, but basically windows is horrible for what folding is doing, and you should avoid it at all costs as the overhead, as mentioned above, is massive.  To give you an idea I have a 1080Ti in Linux on a potato system, A6 5200, and it's currently rocking 1.4m ppd.  When it was in windows and it had a 1080, it would not even do 400k ppd.

Thanks for the help. I've never setup a linux system but can research it. I know there's multiple places to get it with different setups and stuff. Which one should I look into. The system is only used for folding if that matters.

TAMUmpower

Ranmacanada
It depends on the work unit as well.  94xx WU will not use your 1080Ti at all, I usually see mine sitting around 70-75% if that, when these WU are abound.  With the current 114xx WU you will see your cards get used more, but these WU are rare.  Very rare.  Linux will give you a 15-20% boost in score, as the overhead in windows seriously is massive, so if you can, switch.  It also does not need anywhere near the CPU resources to feed the GPUs in Linux as it does in Windows.  
 
As for the work units stopping the cards from reaching max, it more has to do with the way that the windows drivers are created, and the fact that the work units are designed for Fermi architecture.  There is a very long post about it on the folding forums, but basically windows is horrible for what folding is doing, and you should avoid it at all costs as the overhead, as mentioned above, is massive.  To give you an idea I have a 1080Ti in Linux on a potato system, A6 5200, and it's currently rocking 1.4m ppd.  When it was in windows and it had a 1080, it would not even do 400k ppd.

Thanks for the help. I've never setup a linux system but can research it. I know there's multiple places to get it with different setups and stuff. Which one should I look into. The system is only used for folding if that matters.

Chris21010 actually has a TERRIFIC step by step in the sticky section, with pictures and everything to hand hold.  Don't worry, it is a fantastic walk through (I used it and my only experience was with Unix back in 1992-1995), and the only thing it doesn't do is buy you dinner when you're done.  Everything is very clear, the pictures make it so there are no second guessing.  
https://forums.evga.com/Guide-to-BuildInstallSetup-your-own-MultiGPU-Linux-Folding-Rig-m2682398.aspx
 

bcavnaugh
What name are you Folding Under?

MattMorris_ALL_1A91a7YpY6gkZZ8rEvQtLazRwUbTJ7ZcT2

Ranmacanada
Chris21010 actually has a TERRIFIC step by step in the sticky section, with pictures and everything to hand hold.  Don't worry, it is a fantastic walk through (I used it and my only experience was with Unix back in 1992-1995), and the only thing it doesn't do is buy you dinner when you're done.  Everything is very clear, the pictures make it so there are no second guessing.  
 
 

Cool thanks I'll check that out. Probably let it go tonight and attempt it tomorrow.

Cool thanks. I'm trying to hunt down a second 1080ti. My buddy has got 2 1080ti's and 2 980ti's humming away on 2 machines now... I'm falling behind.

Got linux going. on a 14*** WO I'm between 1.48-1.5m PPD! on the 94** WO's its gone up to around 1.12m PPD. So a pretty large improvement from the 850-950K on a 94** and 1.2m on a 114** WO in windows. Linux is no joke.

Haha I actually had to use a few guides. Had a bunch of random problems that I'm sure more computer savvy people wouldn't have experienced. Now I'm working through some problems getting it to network with my windows computer. Slowly making progress.

WU have a large variation in how well they use your hardware & how many Points are awarded
 
Its easy to see on my UPS, watts being consumed by the Rig change by up tp 200 watts

 I agree. I only see 
70-78%

turbomadman
You would figure by now the program and drivers would push the cards ballz to the wallz or at least give us an option for it, lol.

Well actually you figure the program would be smart enough to poll the system to know what cards you have so that the best WU would go to the best cards.  But that would be unfair as those with 1080Ti's would get the majority of the 11432 WU, but it would also mean they would not be getting these new 1378x or the 94xx WU.  Stanford has to upgrade the folding core first, as we are still working with a core that is based on Fermi architecture, due to the sheer number of old cards that still fold!