Are you using mouse for movement so that you can more readily use actions? Mouse can be fast if it's freed up. You could shift your single target heals to surround the movement buttons, like Q E Z X F V G ` 1 2 3. In legacy W A S D is plenty control for movement while doing other things with the mouse. I basically never use mouse for movement in combat. For adjusting my view yes, but not exclusively. I also use the arrow keys for view changing when not using the mouse, because I mostly set damage actions to the numberpad. Even on top of moving my hand between keyboard and mouse a tiny distance selection can be really fast. But it's also a matter of where you leave your cursor. When I'm not using it I try to leave the cursor in a consistent place right next to the party list. However I do also often use T to select target's target