Why is there so much lag on server side.

Running a 1.25gb fibre connection and it seems like the servers always lag when in a squad. 

It happens solo too but everything on my side checks out and have a 8ms ping to my host server and on PS5.

Keep getting icons on the left side of screen for lag and packet loss but my connection checks out.

I know others complain about this too, please fix this.   

Gun won't fire, lazer designation wont zoom, walking in place...my USA friends have the same issue and I am out of Canada.

I thought these were high tick servers?