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:
CS:GO won't notify your Steam friends what server you're connected to if you're playing on a community server, but there is an easy command which will enable the function.
See the official Steam support page here
If you get this error message without have used any 3rd party applications, this quick fix should solve your issue.
None - Opt out of all beta programs
C:\Program Files (x86)\Steam\bin\Steamservice.exe /Install
It has been done on purpose.
Fix was posted in Steam Forums. Some people report that it caps the game ~50% of screen refresh rate
Download, extract and run this registry hack file.
Help & Options
Enable Developer Console (~)
Set Launch Options...
The console will now open when the game launches.