i5-2500k@4,7GHz + GTX 970 stuttering

Nvidia on Window 10?  Yep...

In MPC-HC, set your LAVfilters decoder to "DXVA2 (copy-back)" if you haven't already.

The other things typically mentioned that might solve your issue:

- Enable Direct3D Fullscreen

- Manually set the amount of threads in SVP to a larger value (you want the smallest amount possible that gives a perfectly smooth result)

- *gasp* disable GPU acceleration in SVP; a last resort, but it's worth a shot.

All GPU acceleration really does is shift some of the load from the CPU to the GPU.  It's likely that, because of your overclock, you can run SVP at full speed even without GPU acceleration.

The thing is, there's a maximum that SVP will run at even if you have lots of processor head room.  In order to pass that limit you would need to use custom settings in SVP, and even then that only raises the bar rather than eliminates it.

If you really want to get GPU acceleration working, I would try running DDU (LINK) and then re-installing your GPU drivers.  You can also try installing the drivers for your Intel integrated GPU and selecting that in SVP (this is particularly useful if you use MadVR since you can dedicate your 970 to that).

I'm aware of that, but you didn't say whether you used DDU or not - that's the key.  Yes it can make a difference - I had a problem where, after I installed and then uninstalled Nvidia drivers via the normal uninstaller, I was unable to select my integrated Intel graphics in SVP until I ran DDU.

And yes, it can make a difference even if you installed the drivers on a fresh copy of Windows 10 because DDU will attempt to disable Windows's automatic drivers installation since that can sometimes bork up things if you're installing drivers from the vendor rather than from Microsoft.

While you're technically correct, you do still have integrated graphics because it's built into the CPU itself.

If you're saying that your mobo doesn't have a video outputs, well I don't think you actually need to remove your discrete GPU in order to install the Intel GPU drivers...

Yeah it's a little tricky - my personal method for finding Intel graphics drivers for Sandy Bridge is to put the following into Google:

It's the first result.  Note that there isn't an official Windows 10 driver, so you have to use the Win7/8.1 driver.

For reference, this trick works on other Intel processors as well; for my Haswell Pentium I just change the '2nd' to '4th' and voila.

BTW, just to check, is your monitor larger than 1920 pixels wide?  I ask this because apparently the iGPU on Sandy Bridge may struggle with SVP at resolutions larger than 1920 pixels wide.

I forgot to clarify, the Win7/8.1 drivers should still work on Windows 10 - in fact this may be preferred since, like Nvidia, Intel's Win10 drivers seem to not be that great stability-wise.

(interestingly enough, it seems that AMD's Win10 drivers work just fine with SVP...)

Used DDU, windows 10 installed old nvidia drivers, I installed Geforce Experience and downloaded lastest drivers. Now SVP works with acceleration. Intel drivers refused to install because system restrictions (tired compatibility). Downloaded zip version of intel drivers, same thing.

For now i need to test it for some time how it works. Thank you for your time and help.

This is just too proof my OC because svp mark didnt detect it.

I can assure you that is not the case. I think I would notice that my card is in 1x mode simply by low fps in games.