Comparing Tweakeroo-1.21.1-0.21.50 with Tweakeroo-1.21.1-0.21.51,

The Freecam in 0.21.51 is glitching which is noticeable. It is more noticeable when I fly with hold CTRL to sprint (I did not turn tweakFlySpeed when I tested on both version.)

I reverted Tweakeroo back to 1.21.1-0.21.50 and it came back to smooth again even though my MaLiLib is already version 0.21.1
So I think the problem comes from Tweakeroo in version 0.21.51

I am using Fabric
Playing on my own fabric server.

Mod list that I am using (in case you think the problem might just come from other places)
BetterF3
ClientSort
Cloth Config v15.0.140
Continuity
Cull Less Leaves
Dynamic FPS
Fabric API
Forge Config API Port
Indium
Item Scroller
ItemSwapper
MaLiLib v0.21.1
MiniHUD
Mod Menu
Pick Up Notifier
Placeholder API
Puzzles Lib
Reese's Sodium Options
Shulker Box Tooltip
Sodium
Sodium Extra
ToolTip Fix
Trade Cycling
Tweakeroo
Visible Traders
YetAnotherConfigLib