I’m playing the mode with 150 (Latin america) ping just like the normal game,
for tanks and aircraft mode its butter smooth, but in this game mode it is very janky with random changes in movement speed and some delay and cancellation on stance changes.
Any idea with the infantry mode will have servers on more regions to mitigate the ping issues.
You might want to check your graphics settings as they have implemented a
seperate section just for Infantry -

Your ping is the speed of your connection/data transfer and packet loss
is the quality of that transfer. Modes shouldn’t make that much difference
in the same game, War Thunder(or any other I guess) but your graphics
settings can cause issues at times if it is too demanding on your gpu/system.
Anyway, I used the “defualt” settings I got when they added that in and it works
ok for me like that, so I have not messed with it any.
Normally I would say check it in test flight/drive, but since Infantry is still CBT
I am not sure that is even an optiob at this point.
Anyway, good luck getting it sorted out