Windows Vista Tabbing slow for cpu intensive applications

Well im back again making yet another post for the OS of doom in my personal opinion... Man I really need to switch back to XP... Anyway I have noticed that tabbing out of and closing CPU intensive applications such as WorldOfWarcraft, Photoshop, 3DMax are rather super sluggish I never seemed to have this issue when I was back on XP and the system was a lot slower.

I have more then enough ram and CPU power to back all the applications is it possible that something running in Vista is slowing this down to where it takes close to one to three minutes just to close or tab out of an application sometimes resaulting in a system wide lockup that it doesnt seem to pull out of until I unhook some device and plug it back in like my external hard drive, mp3 player, Bluetooth etc.

For some reason vista shifts its priority when a new device is connected almost within seconds and pulls a system out of a lockup... No idea why... I am also running a readyboost using a 4gig flash drive that seems to work fine an im almost sure its not my video card I just upgraded that a month ago?

 

running 3gigs of ddr2 ram inside and have a 4gig flash drive with readboost and a 3.16ghz intel 2 duo core...

It might be my video card but I doubt it I would think that the geforce 9600 gt oc 1gig ddr3 would be enough to run vista and other applications... I thought it might be the aero effect or w/e on vista so I turned everything off and what not and im still left with the issue so im not sure all my drivers are up to date...