Buy a macro keyboard....
My keyboard can't do more than two actions at once. Like if I'm in-game, I can't do CRTL+Shift+TAB to crouch while getting my steam overlay up. And it also locks when i try to do Shift+CTRL+Space to Sprint, and jump crouch. Any ideas on how to fix it
Just google it, I'm sure you'll find an answer lol...
USB drivers.
Maybe even ghosting.
Your roll over is not enough.
See if the same thing occurs when using a different keyboard