I didn't see this report when I made MC-252059, so you're welcome to look at that for another example.
This issue was fixed in 1.18-pre2, but MC-241194 was used to track the bug, despite me creating this report first.
Can confirm for 1.18-pre4
Probably a duplicate of my MC-241193 report, but thank you for adding additional information. Feel free to comment/attach stuff to my report. I am using a Windows 10 PC so there may be different results.
FPS in 1.16.5: 463
FPS in 1.17.1-rc2: 310
OS: Windows 10 21H2 19043.1081
CPU: Intel Core i7 9700F @ 3.00 GHz
GPU/GPU driver version: NVIDIA GeForce GTX 1650 (version 471.11)
Profiling ZIP: https://bugs.mojang.com/secure/attachment/422512/2021-07-05_15_06_17-PerformanceTest1_17-1_17_1-rc2.zip
I should mention this in case it hasn't already been posted.
PaperMC fix: https://github.com/PaperMC/Paper/pull/4872
PaperMC version before fix (build 326 is unavailable): https://papermc.io/api/v2/projects/paper/versions/1.16.4/builds/325/downloads/paper-1.16.4-325.jar
PaperMC version after fix: https://papermc.io/api/v2/projects/paper/versions/1.16.4/builds/327/downloads/paper-1.16.4-327.jar
Unblocked in 21w14a.
Not sure how this is a duplicate if this issue was created first.
This bug was magically fixed in 21w10a. Not sure how, but if anyone from the mod team sees this, mark it as fixed in 21w10a.
Confirmed in 1.16.4, affects horses too
Hello, this is my new account.
This bug does not appear in new releases of Bedrock Edition.
screenshot of f3:
[media]
This should be closed as a duplicate of MC-63, it's been a while.