>>313835528
Yes the resolution per eye. Research properly what you need on your Quest 2. Since you can't trust Valve to properly place the resolution for their competitor headset.

After that if you are gonna play any game through steam you have to press and hold SHIFT to pop out that special unity menu. Place the quality from VR high into desktop low.
This won't affect the graphics in your game. It's the projected window on your desktop only that it will affect.