Technical Game Crashing

Hey guys, I'm having a problem with my wow crashing a lot. I'm using the 3.3.5 old models version btw. I don't know why but my game seems to be crashing a lot but mostly in dalaran. There's also a 100% chance that my game will crash 30-60 seconds after I fly out of or into dalaran. When it crashes it says something about not having enough memory which doesn't make much sense to me because this computer is less than a year old with 16 gb of ram. I tried reinstalling it but it did no good. It was originally in my Drive D which is my HDD drive and when I reinstalled it I put it into my Drive C my SSD. When it crashes in dalaran, it usually crashes when I'm either just walking around or I crash a few seconds after porting there. I checked my anti virus and no threats were found either and restarted my computer but that didn't help either. Any help is appreciated.