Quote:
Originally Posted by lello
As you can see with UHD movies the rendering is high by activating DXVA2 copy back so, in my opinion, I can solve the problem only by replacing my RX 580 with a more powerful GPU: could an RX 5700 XT be enough?
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Do you have slow HDR processing enabled? DXVA2 copy back is probably allowing more advanced HDR processing which can easily be very slow on a RX 580.
I don't know what GPU you might need for the slower HDR processing.