While I'm not so sure it will help with TTS crashing, I have been willing to look at SONAR crash dumps and can tell you what crashed and what I think. Not sure it's been all that helpful though, but it's at least a clue.
Zip up your last 5-6 crash dumps and put them on the net somewhere and post a link to them. Dropbox/Google Drive/One Drive/whatever. Make sure you include the crash files that correspond with the project and time it crashed. (Sort the files by date). SONAR Platinum stores its crash dumps in
%APPDATA%\Cakewalk\SONAR Platinum\MiniDumps
(you can paste that into the Windows File explorer). The dump files end in .dmp and will named by project then the date and time of the crash.
As a rule if a specific plugin is crashing on you, repeatably, your only choices are find the magic setting to make it happy/stop crashing (unlikely with TTS-1), get the developer to fix it, or to stop using it.
If I was faced with TTS-1 crashing I'd most likely just bounce it to audio and replace it in the project with a wav file. Another choice would be to use a General MIDI soundfont with a soft synth like sfz (or a half-dozen other soundfont playing synths). There are generic MIDI soundfonts out there that sound as good as TTS-1. Unless you need every instrument in the General MIDI spec you should be able to find a patch for some soft synth that is just as good.