Implement TRM to improve performance 37%+
Basically, send every other frame on each eye at lower resolution, it can improve performance without perceived quality loss (might be better than fixed foveated rendering, and can be combined with it for even more performance).
Kevin Johnson commented
Their research found that the minimum presented framerate this is effective for is 90 frames per second, as stated at the very end of their research presentation: https://www.youtube.com/watch?v=UARADXX4ZMs&t=291
The Quest screen's refresh rate of 72hz doesn't meet this criteria.