When moving through borders in 1.14 and above it causes a stutter and that stutter affects versions from 1.14 and above as per my testing. EDIT: it seems to not occur at all in 1.14.3. so it is from 1.14.4 and above. And directions do not matter it still stutters the same in all directions

It also seems to increase as the game version increases where in 1.14 the stutters where a lot weaker than the ones in 1.20 for example and they didnt exist at all in 1.12.2, and my CPU usage doesn't go above the 70s when such stutters occur so i believe it is not my hardware but i'll leave the hardware specs in the Environment tab.

I also have one question: in F3 there is a line that has (SH: ML: etc) and those values turn to (??) for the period when such stutters occur, so my question is what do those values represent?

Steps to reproduce:

1: Create a new Singeplayer World

2: Wait for chunks to load so the game performance can stabilize

3: Press F3 + G to view borders, move through said borders and you'll notice a stutter occur.

Notes: I've attached a Video of the problem in 1.20.6 Vanilla (with chunk amount of 2) and a debug report from F3 + L when said stutters happened.
video: https://drive.google.com/file/d/11ZgeZkGv4Qvtlma-Ezpl_vPhofItbOqF/view?usp=sharing
Many thanks in advance!