The Bug
Average FPS and TPS in 1.16.2 release is lower, than in 1.16.2 release candidate 1.
Worth to mention, rc2 (which became 1.16.2 release) only reverted one of the rc1 changes (in terms of anything that can affect performance)
It all causes lag spikes to appear a bit more often than usual, and makes them actually affect the game in form of reading mouse and (probably, but hard to confirm) keyboard output twice, which leads, but isn't limited to:
dubble-read mouse output (block placing/breaking in creative; using items such as firework, filled buckets, etc.; attacking)
fluids desync appears even more often, than since 1.15
mobs' AI micro-lags visibly more often.
This was NOT a thing in 1.16.2 Release candidate 1.
I know lag spikes exist in 1.16.2 rc1, as seen on the screenshots below, but they didn't affect the game that harshly.
Screenshots from testing below were made on newly created world with the same world seed and world type (waited around 15 seconds on both, before started making screenshots)
Thank you for your report!
However, this issue has been temporarily closed as Awaiting Response - this does not mean the report is not valid, we just need more information to verify it.
While the lag occurs, please run
/debug start, wait a while and then run/debug stopin order to create a debug profile. Afterwards, run/debug report.If you do not have the permission to run these commands, open your world to LAN and enable cheats. If you're on a server, make sure that you're a server operator in order to execute these commands.
Then, please attach the profile results found in
[minecraft/debug/profile-results-<DATE>.txt|https://minecrafthopper.net/help/guides/finding-minecraft-data-folder], as well as the debug report found in[minecraft/debug/debug-report-<DATE>.zip|https://minecrafthopper.net/help/guides/finding-minecraft-data-folder]here.Please do note that at the moment this does count as a non-descriptive "Performance is worse" report for me like MC-45458, which - based on our experience - are simply not a good idea.
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