my friend hav same problem. He reinstalled game, installed newest GPU drivers, changed everything to minimum, turned off all aplications, deleted character 2 times. When hes restarting game sometimes he can go out from port once, but when we ending mission or he come back to port and trying to come out, problem coming back. He played without any problems few houres before 23 March and all was ok. Maybe last update maked this problem
He works on Win7, on strong PC, hardware requirements are not problem for sure