Mimsy for President wrote:I had a similar problem but it only used to occur in battle. Resetting my hotkeys fixed the problem. I know it sounds absurd but I found out that it was due to the Attack Move hotkey.
I really suspect this is your problem (because I recognize the way you describe your problem). You should make sure your attack move hotkey is not conflicting other hotkeys otherwise the game will lag super hard once you use it.