[CRASH] Gmod Freeze and CRASH For All Players (ClientSide Crash)

Hey !

I’m running a big Starwars Server, but everytime the Server Reach 70/70, Half of the players start to crash (Gmod that freeze and crash with no reasons)

Here is the .mdmp files:

29/04/2016

My friend’s .mdmp file:

Another friend crash:

Another friend crash (2):

Another friend crash (3):

Please can you fix this problem?

Here is a picture of the map we have:

http://image.noelshack.com/fichiers/2016/17/1461936522-map.jpg

New crash mdmp file (4):

Citoyen?