I doubt that this is the solution since I’ve always been using a bluetooth mouse (and I believe most people in the other thread do as well).
Someone in that thread said it might be a VRAM issue and you could try changing that in the Harmony preferences. I did that, and I must say I haven’t had any system freezes/crashes since then (and it’s already been a week or so).
I have a GT 750 with 2048 MB of VRAM in my MacBook, so in Toon Boom’s OpenGL preferences I’ve set everything to 2048 MB accordingly. Which means maximum texture size, texture memory and vector drawing maximum texture size = 2048, playback cache = 1024.
At least that prevents TB from killing the entire OS.
However, TB 14 is still a mess, it still crashes at least two times a day (the app itself, not the OS). Especially when you keep in mind that TB 14 has been released more than half a year ago without getting a single update, this is completely unacceptable…