So I played around with this map and its absolutely beautiful.

However, I noticed that every time I've tried to play on this map with friends via a multiplayer game, it keeps crashing after a period of time. At first I thought that maybe my gmod was just being temperamental, but after going thru the usual troubleshooting methods one normally has to with a game like this (including unsubbing from some of my addons), after about 6 different multiplayer games, each time the map would run smoothly for a limited time and then crash without warning.

Hoping to ask the uploader/creator if there is any potential fix for this as I am not sure that this happens in a singleplayer game.
Edit: I should also mention that I have a pretty high end PC with a Ryzen 5 3600 6-Core processor and 24 gig of Ram, and have ran more graphically intensive maps than this one so I doubt my device is the problem.