It has to be something to do with your controllers, I’m having no difficulty turning the F18 onto the taxiways. I caught up with a group of other F18 flyers in Hawaii the other day and none of them appeared to be having difficulties turning off the runway, so it seems that there is something significantly different about your system or technique.
I’ve no experience with airliners, so can’t comment there.
Good luck with your further explorations.