Navigating these forums I swear… No idea if this is where I should post this; but, here it is.
I suppose an old problem was a character freezing and not being responsive. Not a lag/latency issue and EVERYTHING is functional, except your character movement/abilities. You can drag and drop items, not pick up anything…
I “guess” the old fix would be to simply swap weapons with “W”. This did not work for me, even though my weapons were swapping back and forth as normal. I actually had to plug in an XBOX controller and get it to switch to use the controller before the game let me have control again using mouse and keyboard. Hope that helps if you’re currently playing and looking at old solutions and not working.