I’m in the same boat. After a reinstall to try to fix the performance issue (partially successful), I haven’t been able to fly the TBM as the screens are black. I find it’s about a 50-50 thing as well (with ot without the WT mod makes no difference).
And I also have the live weather bug, so restarting a flight means I have another 50% chance of displays not working, but a near 100% chance of not having weather upon restart, which means a restart of the sim as a whole.