I've found that if I only use the map screen while running TC at 256 or higher it keeps me from having glitches or CTD. Once a contact or something else happens it drops you out of TC right away.
I've relied on this heavily to keep me in the knowing.
It's usually when I try to run high TC while in a heavy graphics mode such as outside freeview with lots of ocean and activity that my system says...
Nope, ain't going there. What do you think I am a supercomputer...
Can't see the need for high TC for anything other than map purposes.