Constant despawning of stashes and bases/tents this is the main reason for replicating/duping.
What's the lag spike? It causes cars to crash, these cars take hours to build and seconds to trash.
I run over some streams and I end up swimming in the sky.
Twice I've ran over a hillside to find I'm either falling the through the sky beneath the map or swimming.
What happened to the guns? They are pretty rare to find now.
Other than these I can handle the rest of the issues, brilliant game by the way.