no I don't think there's a such thing as too much custom content (I have maybe 3 to 4 thousand files in my downloads folder:) ) and i'm still putting stuff in there. U may have to go back and take back out the files u re- downloaded. did u download some game hacks? cause some aren't compatible with each other. I've had my game crash too but once I removed (usually was a hack) my game stopped crashing it hasn't crashed in a while.
I do remember once my game was crashing because of some custom content I downloaded, but I removed it and it stopped.
i had too much content
it takes sims longer to load the more custom content i have installed
maybe cause i have soo many other programes on my computer?
and the window... it looks the same as regular full screen sims, except there is the bar with the start up window at the bottome... so i cant even reach the X or minimize :/