Do my downloads affect my graphics?

Sorry if this has been asked before. But i just wanna know, does the amount of downloads that i have in my game affect my graphics meaning make it crappy?

when i take pictures i don't have a LOT of stuff. usually it's just some walls, floor, insimenator stuff, so i know the graphics aren't horrible because my lot is overtaxed.

and i know you're gonna say maybe my graphics card is crappy. you're right but i had decent pics before.

i'm saying this because after discovering the, er, booty, i've been on a download spree, like shopping on a platinum amex card. so maybe, just maybe my downloads are causing this? if they are i will gladly get rid of a few that i don't really need.

i just want an explanation. sorry for this oh-so-long-and-whiny novel. thanks for reading and thanks for helping.