My front passenger window is a lot slower than the others in my car. I can't figure out what the problem is. I know that it isn't a model/year problem because I had the same problem with the 92SE that I had b4 and I replaced the regulator in that one wit a new stock nissan one when it quit working and the new one had the same problem. I just bought a 2K GLE and it bothers me because I am having that same issue.

92 SE RIP
2K GLE The New Slique!

 

Seems to be the same way with me, mostly just when I'm moving more than one window and definitely more noticable when rolling the window up instead of down. If I have the back two windows moving up from where they stop at half height and the front passenger one moving up at the same time, the front window makes it up to the top much later. Sounds like it's struggling or something. Less noticable speed decrease when just moving that window and no others though.