Is it still my video card?? :(

I have all the games for sims 2 and patches installed, except FFS. When I play up to seasons I have absolutely no issues... I have more than enough hard drive space (way more), I have over a gig of ram, etc etc... That is not the issue. What is, is my video card (I think). I used to run a GeForce 6600LE, and my gameing experience with the sims was horrible, I couldn't run FFS or OFB it would do weird stuff, but I recently installed a new video card, the GeForce 8600 GTS plus I have the new driver nvidia released (162.18 forceware blah blah blah). OMG IT WORKED!! I could put back in OFB, and the game played perfectly!! I was AMAZED, this is Sims 2 with everything up to seasons... Then I decided to add BV... Then it crashed 3 times... I only tried playing 3 times... SO I uninstalled it. It would run fine as long as I wasn't combining actions. In otherwords I could make a family, but if I tried to put them on a lot and build a house it would crash. I could build a house, but if I tried to play the lot it would crash... Should I wait to see if the patch would fix this issue, or should I just not bother with BV?