GTA V version?
Most current
Up to date?
Yes
Legit or Pirate copy?
Legit
Steam/CD/Social Club?
Steam
Windows version?
Windows 10 education
Did you try to disable/uninstall your Anti-virus?
No
Did you try to delete caches.xml and try again?
Yes
Error screenshot
GTA V folder screenshot
GTA V/update/x64/dlcpacks screenshot
update: http://prntscr.com/fj1pzc
x64: http://prntscr.com/fj1q22
dlcpacks: http://prntscr.com/fj1qvy
Filepath to FiveM folder
AppData -> Local -> FiveM
FiveM client folder screenshot
1st half: http://prntscr.com/fj1s08
2nd half: http://prntscr.com/fj1w39
System specifications
CitizenFX.log file
.dmp files/crash IDs
Also add what you already tried so far.
Re-installing fiveM
Verifying game cache
Note: I also get the occasional game crash mid-game, is that server-side?