So i played Garry's Mod a day ago and if you know that game when you hold down Q it brings up your spawnmenu/utilitymenu but when I do that it just flickers the menu and makes and close and reopen repeatedly, at first I thought it was Garry's mods problem but than I went to play Gta 5 on my computer and if you know, you hold tab to select your weapons but in this case when I held tabs once again it would close and re open and close and re open again and again. Please help and thank you