Topic: Problems with gpu acceleration and GTX 1070ti

Hello, I'm having a problem with the gpu acceleration, whenever it's turned on it becomes impossible to watch any video with SVP, even with the settings at very low. When I disable it I can use it with settings in the medium.

My video card is the GTX 1070ti.
- I have reinstalled drivers
- I've disabled madvr
- I have already reinstalled both MPC and SVP in every way possible.
- The settings in MPC are exactly as in the site guide.

I'm using MPC x64, but I tested with x86 too and the result was the same. I'm using SVP free. My operating system is Windows 10. I looked for some solutions in the forum, but none that I found helped me, so I'm open to suggestions.

(I apologize for possible errors in my English, after all this is the work of google translator.)

  • MAG79
  • SVP developer
  • Offline

Re: Problems with gpu acceleration and GTX 1070ti

GTX 1070ti is powerful enough for SVP.
Try to enable GPU-acceleration and then start performance test: Utilities - Assess system performance

CPU load must be below 10% when idle.

Re: Problems with gpu acceleration and GTX 1070ti

MAG79 wrote:

GTX 1070ti is powerful enough for SVP.
Try to enable GPU-acceleration and then start performance test: Utilities - Assess system performance

CPU load must be below 10% when idle.

I have tried this a few times but the result remains the same. One thing I realized is that even if the gpu acceleration is disabled in svp, if I use the Hardwer decoder in the MPC like DXVA2 (copy-back) or NVIDIA CUVID the audio fails in some cases after a few minutes, this does not happens in DXVA2 (native), but this only when the SVP is turned on, when off I can use any option without problems.

  • MAG79
  • SVP developer
  • Offline

Re: Problems with gpu acceleration and GTX 1070ti

Looks like you have slow speed between GPU and CPU (RAM). It depends on PCI-e mode. It must be x8 or x16.
Check please.

Post's attachments

GPU-Z_PCIe_speed.png, 29.99 kb, 404 x 523
GPU-Z_PCIe_speed.png 29.99 kb, 391 downloads since 2018-11-11 

Re: Problems with gpu acceleration and GTX 1070ti

MAG79 wrote:

Looks like you have slow speed between GPU and CPU (RAM). It depends on PCI-e mode. It must be x8 or x16.
Check please.

Hello, sorry for the delay to respond. I checked it and it's exactly like in your image, x16 2.0.

  • MAG79
  • SVP developer
  • Offline

Re: Problems with gpu acceleration and GTX 1070ti

Maybe you have madvr enabled and it asks very much performance from GPU.
Try to select EVR Custom with D3D Fullscreen. MPC-HC menu View - Options... - Output tab

Is it help you?

Post's attachments

EVR_D3DFullscreen.png, 24.47 kb, 646 x 502
EVR_D3DFullscreen.png 24.47 kb, 328 downloads since 2018-11-13 

7 Reply by Oskkar (edited by Oskkar 13-11-2018 23:48:32)

Re: Problems with gpu acceleration and GTX 1070ti

MAG79 wrote:

Maybe you have madvr enabled and it asks very much performance from GPU.
Try to select EVR Custom with D3D Fullscreen. MPC-HC menu View - Options... - Output tab

Is it help you?

Unfortunately no, I tried this now and it remains unusable the "High frame rate index" goes crazy 0.3 ~ 2.5, and with many stutterings in the middle of it. One thing I noticed is that when I open a video the processor usage rate is 80 ~ 90%, this with the gpu acceleration on, while the gpu does not reach 30%, after the stutterings begin to use cpu drops to less than 10% but the GPU also almost 0%.