Video won't open properly with enabled DXVA. Non h.264 opens with decent delay, at first player opens, then system freezes for a few seconds, video opens. If it is h.264 the same happens but without video opens. If I turn off/ turn on DXVA (through LAV video decoder), non h.264 videos opens without delay, h.264 still not opens.
Also it happens ~50% system startups, i can reboot pc and issue disappears for some time.
System: Phenom ii x4, 8GB Ram, Radeon HD7850 2GB, Asus Xonar DS
Latest k-lite codec pack with MPC (but it doesn't matter what player do i use, same issue happens with wmp), latest amd video drivers, windows 10 pro x64