Still I try to find out if really high TC like x2048 or x4096 will exclude that I find contacts or that SH4 will return at x8 or x1 if I receive messages or radar contacts. I have tried with TMO+RSRDC+OTC going towards Japan at x4096 from Midway, and yes, the game stopped when I did encounter a task force in the middle of the ocean

2 carriers sunk, 3 CA heavy cruisers sunk after 12 hours game time and evasion tactics. Very interesting. Stupidly I missed to make a report which would have sent-in some friendly planes maybe.
But I still have to see this in FOTRSU, I use high TC often without problems but I suspect that this mod shouldn't be played at high TC if you want to make any contacts, not over x1024 as KaleunMarco suggests.
XS