Can't run diagonally in source engine games

[fart chaser]

Hi

Whenever I want to run diagonally in source engine games (for example, when I press both "W" and "D" at the same time) one of the inputs ends up cancelling out the other (I end up running either right or forward, but NEVER diagonally froward-and-right)

This issue surfaces ONLY when I play source engine fps games (Team Fortress 2, Portal 2, Fistful of Frags, etc.) but never on other games. I have even ran a keyboard check to see if I can press 2 of the WASD keys at the same time, and I CAN do it everywhere (but not in source engine games)

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I have windows 10, my TF2 game runs on lower settings (just in case), I have all necessary drivers installed and updated, and I have a gaming keyboard (Bloody B314)
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I've read craptons upon craptons of forums (including steam discussions) with people discussing the same issue, and the only answer people usually end up getting is "buy a new gaming keyboard". But I am absolutely convinced that the hardware has nothing to do with the problem, since this issue exists only within source engine games.

Please help me fix this problem, I just want to enjoy my favourite valve games again like I used to.

[fart chaser]

Αναρτήθηκε αρχικά από AustrAlien2010:

disable the Steam cloud

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Αναρτήθηκε αρχικά από AustrAlien2010:

unsubscribe from any mods

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Αναρτήθηκε αρχικά από AustrAlien2010:

reset the controls to defaul

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Αναρτήθηκε αρχικά από AustrAlien2010:

verify integrity of files afterwards.

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And it still doesn't change anything, sadly

[Muppet among Puppets]

So what is different now still from any one who starts the game on new os?

There must be one difference

[fart chaser]

Αναρτήθηκε αρχικά από Muppet among Puppets:

So what is different now still from any one who starts the game on new os?

There must be one difference

Aside from that one single tf2 bug there are literally no differences I think.

[Heeby-Jeeby]

I had the same issue except walking the other way. I was unable to crouch and walk diagonally forward and left at the same time. Walking diagonally forward and left was not a problem as long as I did not hold the shift key at the same time. My keyboard was using WSAD layout with the shift key as crouch.

My issue went away when I replaced my keyboard.

My old keyboard was a PS/2 connection. My new one is a USB.

[Alex Under]

How to resolve it ?