Are you hitting ENTER to switch from first to third as the default keybinds are? It works flawless for me by just pressing ENTER.

I have the same thoughts, its slow and awkward to have to hit multiple keys to do that. All FPS can go from crouch to run with the run command.

That a desync issue with the server keeping up with your location. It is known, and suggested to not run for long periods of time without stopping and allowing it to catch up. When it has happened to me there was a "link of chain" icon that popped up and turned yellow, I assumed it was a server link warning, when it turned red a few seconds later I get kicked.

Known bug, reported many times, rest assured they know about it and are working on a fix. Remember its a new build in Alpha state.

Same here, it also doesnt matter if its pristine or damaged it does not muffle sound

Having the same issue, zombies teleport through walls.

Its killing me also, outside its just annoying, and makes my eyes hurt as the character moves, inside along with movement glitches it is horrid.