Set Launch Options...
CS:GO can crash when loading the next map if you're on a 32-bit operating system. To address this, you'll need to edit a txt file.
The crash is caused by going over 4GB total memory usage, which isn't possible for a 32-bit OS. To fix it:
See the official Steam support page here
If you get this error message without any 3rd party applications this should solve your issue.
None - Opt out of all beta programs
C:\Program Files (x86)\Steam\bin\Steamservice.exe /Install
Help & Options
Enable Developer Console (~)
The console will now open when the game launches.