One other tip not related to the SpaceMouse itself, but something you may notice when using one as it makes is so easy to move through the 3D views:
If you use multiple monitors or a tiled window view and notice any slowdown with your 3D view as you move then ensure the plan and floor with the camera symbol on is not visible. It's not enough to just hide the camera indicator by layer (and disabling always showing the symbol) you need to be on another floor of the plan of not have the plan window visible at all.
It appears having the plan the camera was placed on is causing extra re-calculations for the plan. I often place full cameras on an attic floor to avoid this issue as the speed difference can be significant on complex plans.