strange preformance issues .... ( spoilers?)

so I’ve played until where infinity comes in and twice now the game has frozen on me, once just after walking after infinity comes flying in and once near the beginning before going into space. also on the first level ( where you first see jackals ) i managed to fall halfway through the floor and had to reset…

I’ve installed both disk 1 & 2 btw, no idea what the problem is and its kind of annoying.

Anyone else have these issues?