Slow to go from desktop/taskbar back into solidworks espesh with big files

I've found it annoyingly slow to go from desktop/taskbar back into solidworks especially with big files.

It is as if the solidworks part/assembly wants to fully re-build before the solidworks window will open.

Not a problem with small/simple files but a total PIA with anything of size.

below is the typical scenario....

from the taskbar, hovering/clicking pointer opens small version of part windows, BUT you then have to wait until the part/assembly is ready (rebuilt?) before you can click and re-open the solidworks window. The delay is proportional to the size/complexity of the part/assembly.

I'm guessing loads of memory is flowing from system / explorer back to solidworks.

Anyone got a tip to avoid this ? (its especially embarrassing in a presentation when jumping from say a powerpoint presentation back to a solidworks model)

SolidworksGeneral