You toggled the setting that Relax mentioned, causing everyone to look the same. You can just turn that setting off again. That setting is not enabled per default btw., so someone using your game must've enabled it (or a person sent you a modified config). Perhaps the FPS in your config is also lower than default (250), causing you to have a laggy feel - or you have a high Hz monitor but have FG running at 60 Hz. These are things that can cause a laggy feel.