Is WT3 a plug in that loads through the plugins folder of X-Plane? If it is, it doesnt matter if you have it turned on or not, it will load with the sim, since everything that is in the plugins folder loads when X-Plane loads. Disabling it doesn't prevent it from loading. If all the above is what is happening, it's likely this is the cause of your AI flickering on the MFD. I don't have this issue as I don't have WT3 installed.
Regarding the CTD, other people have reported CTD's when running the TBM with WT3. The only thing I can think of is to mention it to the WT3 devs.
Regarding the *sigh*...I said that every.single.time someone said they were getting CTD's on load up of the sim, only for me to reply to countless people to update their grossly outdated GPU drivers. It got so bad, I had to make a separate post on it.
We're doing our best with the support, Greg. But the CTD's are not always the TBM's fault. Even though it may appear that way.
The TBM will run flawlessly on a clean install of X-Plane. I know this because one of my X-Plane installs is bare X-Plane with default scenery, that is used as a test bed for early builds. The more plugins a user installs, the greater the risk of a crash.
I apologize if it's frustrating for you, but like I said, we're doing our best to get these issues straightened out. Even though it's a small percentage of people getting them