Compared to 1.15.2 and the last snapshot 20w21a, the rendering changes in 20w22a cause extremely significant fps drops to the point where the input lag is causing double tap for creative flight to not be possible.

Specs incase you need to copy paste
    CPU: Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz

    Display: 1366x706 (Intel)
    Intel(R) HD Graphics 3000
    3.1.0 - Build 9.17.10.4229

Additional specification available on request.

Notes:
Machine was under similar stress, no higher priority programs running during 20w22a testing etc.
World was pre generated in 1.15.2 and fps were allowed to settle before capturing. The same world was used for all tests.
Character did not move for the entirety of the fps recording and no settings were changed beyond the games version.

I did try to search for a similar bug report to this to no luck, apologies if this is a duplicate.

Clarity: For the screenshot which has a covered version number due to fps bar, this is the version 20w22a as specified previously.