tap strafe not working

Hello Se6d, I was having the exact same issue less than 2 hours ago. I had changed some in game settings as well as some steam settings. I tried my game on max graphics, max res, and capped my fps to 120 in steam, i normally play 240 fps with all low settings on 1280x800. I tried doing my usual 180 tap strafe wall jump and it wasnt working. This bugged tf out of me. Turns out, for some reason if you turn your settings up it for some reason can add input delay to the game that normally wouldnt be noticed. However, in the case of tap strafing where every milisecond matters, it becomes impossible to tap strafe properly. My advice to you is to make sure all your video settings are as low as possible and make sure fps isnt capped in steam. This should solve your problem.