Back to basics for you!
Disable everything that is not included in GWX 3.0 > Load and Test.
Then start enabling mods one by one.
TBH, usually when you get CTD's at TC it's either a collision (you and/or mine/ship) or a scripted unit with an issue. Try to log game times and locations when the CTD occurs, gradually narrowing it down so that you can be at 1 x TC when & if it should happen. Doing this allows you to check the campaign files and roster to see if a specific vessel or script is to blame.
Also, what's the file name in the error report? ntdll.dll or other?
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