It seems my situation was different.
No cockpit clicks showed any visual feedback (numbers not changing, switches not moving), although some fo the clicks did complete their action and have an effect on the sim, but I was flying blind to a certain extent.
I left if for 1.5 hours and it continued to fly OK, but with mouse clicks ignored. Mouse wheel was fine on numerical knobs, but would not move switches.
I tried going into control settings and setting up a new control just to make it possibly save and re-read the control assignments. No better.
I tried unplugging the mouse completely and re-connecting it. No better.
After about an hour and a half, all input response stopped, including keyboard and other controllers. Then I noticed that the sim had now frozen.
I checked in the TaskMan and sure enough, “Not responding”. So I killed it.
First time I’ve had a total loss of input followed by sim freeze, but without a CTD.
I’ll ZenDesk it.