There are a number of important performance considerations that are specific to how Unity does its rendering. Some of these may be common for any graphics engine. Some recommendations may change as newer versions of Unity emerge, the technology advances, and algorithms get replaced.
There are many articles offering recommendations for which setting to use to optimize your VR apps, and it's not unusual for one's advice to contradict another's. Here are some good ones:
- Use the Forward Rendering path. This is the default in Graphics Settings.
- Use 4X MSAA (multi-sampling anti-aliasing). This is a low-cost anti-aliasing technique that helps remove jagged edges and shimmering effects in Quality Settings.
- Use Single Pass Stereo Rendering. It performs efficient rendering of parallax perspective for each eye in a single pass in Player Settings....