it's all in your head

but really I'd just use the other mouse and see if the problem continues, changing your mouse and some of the buttons on it wouldn't change your movement

Its not in my head digi lol I notice it does it when I am quickly going from a to d to w or s quickly or d to a to w or s. It feels like I am lagging on a server/rubberbanding but I am getting nothing that would say I am lagging. I would be fine moving and randomly it moves by itself like its lagged really bad and is catching up. During this I cant move or change the direction until it stops usually 2-6 secs long.

Why would your new mouse affect your wasd movement?

I am not saying the damn mouse is the problem lol holy shit, I was just dateing when the problem happened don't post stupid shit like this please because its not helpful but just an annoyance.

Doesn't really make sense to me... Its probably a keybaord issue and has nothing to do with your mouse. If its in your head, then this should solve it:

// Null-cancelling movement script
// (prevents you from pressing two opposing directions, which causes you to stop moving)
bind w +mfwd
bind s +mback
bind a +mleft
bind d +mright

alias +mfwd "-back;+forward;alias checkfwd +forward"
alias +mback "-forward;+back;alias checkback +back"
alias +mleft "-moveright;+moveleft;alias checkleft +moveleft"
alias +mright "-moveleft;+moveright;alias checkright +moveright"
alias -mfwd "-forward;checkback;alias checkfwd none"
alias -mback "-back;checkfwd;alias checkback none"
alias -mleft "-moveleft;checkright;alias checkleft none"
alias -mright "-moveright;checkleft;alias checkright none"
alias checkfwd none
alias checkback none
alias checkleft none
alias checkright none
alias none

I was using that before the problem. I think it has to do with the script but got rid of them and still happened I think I am gonna have to uninstall tf2 and reinstall.

-autoconfig instead.

thats what I did when I say I deleted the config cfg's and custom folder and I had steam cloud off

Good response to people trying to help you out.

What desza said was in no way trying to help. In fact was pretty insulting with how he sentenced it.