Hello,
First here my problem: When reading a video on my pc it is very slow. (in different players) and all videos. The videoa works well on an an other pc.
I have searching for an error since one day. I looked essentially around a problem with my video hardware (graphic card, motherboard, speed of my hard disk, PCI slot and so on) but that is not the reason !
By an accident I changed my audio configuration from Audio Nu to Realtek (windows parameters) and the speed of my video come back to normal speed. It is so unbelievable but that what was happening.
So I am without any idea how this can happen. Can anybody give me some advice please ?

I bought my card 3 days ago. Yes I have the last driver installed.
To be sure, I have installed this driver once again now: EVGA NU Audio_0.2.1.2_WIN10
 
I use Studio One Prime, Adobe Premier Pro, Elgato 4k Capture Utility, iTunes. I use NIVIDIA Quadro graphic card.
but it is not a problem of CPU load. I did a check the CPU is running less then 5 %
I have a lot of trouble when changing sound parameters in Windows 10 between the Audio Nu 712 card ond Realtek (normal W10 drivers). Often I have to restart the computer to get running the changes.
Sometimes iTunes ist blocking too. The music tracks do not start playing at all.
It seems to be an issue with the control the programs take of the audio device. I have unchecked everywere the "can get exclusiv use" but it not realy make it better.
So it seems that a confict is upcoming with the W10 sound service. I do not know a lot oft this technical staff I just see the error messages: "an other programm use this device, so if you continue it migth give dysfonctions".
 
Can I check something else ?

Hello DamonLynch,
it seems not to be a problem of Realtek because the Realtek driver works well. It is when I switch to the Audio card, I get this trouble. And another hint. The configuration worked well for 3 days. Although, now it does not crash but only to be very slow as if the stack in the card is "overflowed" or something else is "full of data".
ok I can try to switch off Realtek on my MB for a moment, but I have one difficulty to manage at the same time.
I use the microphone Yeti from Blue. It works on USB plug and the audio card do not handle this sound source. So, I need the Realtek audio and W10 audio for running this mic.
It is much more comfortable if I can switch between EVGA and W10 at any time for my convenience.
Yes, yes I red the answer of ty_ger07 here in an other post ()
I want to record with the Yeti. Finally, it is more comfortable to switch between the hardware I use to work with at any moment in spite of the quality of the sound.