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Elliot Kirk's avatar
Elliot Kirk
Former Employee
Apr 08, 2019

We're Listening!

Greetings Microsoft Edge Insiders! Let us start off by saying, welcome to the Microsoft Edge Insider community! We’re so excited to have you here, and we can’t wait to start learning from you. If...
HotCakeX's avatar
HotCakeX
MVP
Sep 21, 2019

CedricMia 

Hi there,

this might seem trivial but just to be sure, can you check in edge://flags/ and see if these options are enabled?

 

 

also the hardware acceleration in edge://settings/system

 

I'd like to ask you that when you said the experience is bad, do you mean that you're seeing lags or stutters? or do you mean that CPU,RAM usage is too high on your system and you want it to be lower (i.e optimized)?

 

 

CedricMia's avatar
CedricMia
Copper Contributor
Sep 21, 2019

HotCakeX 

Thanks

Both HW accelerated video decode and encode are checked.

I enabled D3D11 Video decoder.

I'm losing about 10% frames on this video, with 2160p60 chosen.

https://youtu.be/zCLOJ9j1k2Y 

 

Task manager says CPU usage is about 93-96%.
But GPU shows 0 % Video decode usage.

I guess HW = processor, not GPU?

Or VP9 doesn't have a HW decoding on NVIDIA GTX970?

  • HotCakeX's avatar
    HotCakeX
    MVP
    Sep 21, 2019

    CedricMia 

    Thanks for the video example

    here is my results on Edge insider Version 79.0.280.0 (Official build) canary (64-bit)

     

     

     

    so..I have 0 lag, even on 8K 60FPS, it's still smooth with 0% lag.

    my CPU is Intel i7 7700K @ 5Ghz and I don't have any discrete GPU, so i'm using the built-in IGPU.

    I have 16GB RAM 3200Mhz. running Windows 10 insider fast ring build 18985. all drivers up to date.

    on 4K 60FPS you see GPU usage goes up as high as 65%, on 8K 60FPS the GPU usage is nearly 90%. CPU usage always stays low.

     

    • CedricMia's avatar
      CedricMia
      Copper Contributor
      Sep 21, 2019

      HotCakeX 

      Interesting.
      This is as I expected CPU bound and the HW acceleration does not exploit the GPU, I don't know if this is the expected behavior or not.

      Although rebooting without Hyper-V I'm getting 85% avg, but still lags.

      I just checked my internet speed: 450 Mbps, so no problem here. Unless of course the connexion to YouTube's servers is somehow limited.

      • HotCakeX's avatar
        HotCakeX
        MVP
        Sep 21, 2019
        Yes your Internet is very good for 4K or 8K, even 16K ^^

        I think the problem originates from the graphic card driver or graphic card itself. maybe GTX 970 is not able to decode VP9 video which is not surprising because it's 2 generations old. also there is a high probability that Nvidia turned off VP9 decoding feature intentionally in their drivers. it happens with Nvidia, they usually do similar things to force people buy newer cards.

        your CPU is also being 100% used which is the bottleneck there so it is the cause of the frame loss you're experiencing right now. your GPU is being used 21% but only the 3D part, not video decoding, that's why CPU is handling all the hard work.

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