Lots of players report a CSGO Crash after alt-tabbing or altering resolutions
https://cs-crash-gamefvii928.ironwoodscope.com/posts/11-faux-pas-which-are-actually-okay-to-use-with-your-csgo-gambling-crash
Many players report a CSGO Crash after alt-tabbing or altering resolutions. Fixes include setting fullscreen mode consistently, adjusting resolution back to native, and upgrading GPU chauffeurs to lower stability issues.