@Oldtimer7432 @Tallas182
As a quick test, can I please ask you to go offline (e.g. disconnect internet or local network connection) and see if the game boots and you can fly as normal (albeit without online services)?
Maybe it’s the same as this: [BUG LOGGED] CTD on loading - 100% reproducable - Account Issue
just trying to link some findings to accellerate the interest of the Devs in fixing this issue, plus it proves your installation and hardware is as fine as it can be if you can fly offline.