Shooting Problem

[NubsZz]

I'm having trouble moving both top and left and shooting at the same time. When I hit all three buttons, I only move top left and won't shoot, making it difficult to pk. I'm playing on a new laptop, this problem did not exist on my desktop. I also had to set 64bit sound from false to true to hear the sfx from the guns, if that has anything to do with... well anything.

Something else I noticed are other 3 button combinations that don't work.
I usually press q to see the menu and move with the i,j,k,l with one hand to switch guns with my other while moving. However when I try to open the menu and move top left (combo: q, i,j) I move only up and my menu opens but not left. The same for moving bottom left except I only move down (combo: q,j,k). Hence I think there's a problem with certain three key combinations, not all of them since I can move and shoot and menu in all the other directions.

krnfire1423 also has this problem.