I've been attempting to play on the server, but after a while it will stop registering my footsteps, noises, I can't get on minibikes or open chests, etc. The only thing I see in chat at all is the joining and leaving of players. It becomes spectator mode.

This would happen at times regardless of restarts. Most occasions there has been over 20 other players in game. I have verified integrity and reinstalled twice each.

A friend can play perfectly fine, but he cannot see me, nor does the server say I join. However, it does indicate when I leave. I also find that other servers run me fine. It may just be because my hardware is old, so it can't handle 20 other players, I don't know. I'll test it more later and see if I can pinpoint anything.