I use UE 5.0EA.
In Multiplayer session after Disable and later Enable Tick for Movement Component in Character Actor, it have delay before it actually enable.
Here is example how you can replicate ‘Server adjustment’ to see delay of position correction.
(I tested it by drop character from height, hold button, watch from other character what he see and release button with movement in some direction. character starts falling but after some delay change position while correcting it.)
In my project I have mechanics to grab other players and for rid of jittery in multiplayer after Attach, I disable Movement Component tick locally for grabbed player.
And then enable it when drop a player, it looks like this:
and how it looks without disabling/enabling tick.
For make sure, I tested many things and separate parts of the code in multiple ways.
I Mostly sure what nothing in this setup is make that lag and this mostly fault of enabling tick.
(especially after I make setup as image above and notice delayed position correction.)