I just installed Resolve 17.2 and while setting it up I came across this issue: In 'Decode options' - 'Decode H.264/H.265 using hardware acceleration' is ticked and Intel Quick Sync under it is ticked as well but I want to use my RTX2070 for that (as I understand that's better option). There is no other option to tick though. Just Intel... Any idea why is that?
What are you decoding? There are some forms of 265 that only Quicksync will handle.
But you should be seeing both your GPU and the IGPU. Which Nvidia drivers are you running?
I'm not sure why you think the 2070 is a better option. Go to Puget systems and look at their tests. For decoding even older versions of QuickSync had no problems keeping up with Nvidia cards.
Plus if you use QuickSync for decoding you can use the 2070 for encoding. That will give you a performance boost.