Destroyers unable to detect boat above 8x time compression?

[John Pancoast]

Originally Posted by FeatsOfStrength

I've been playing with options in SH3 Commander, I changed the base time compression for when near enemies up to x32 from x8 just to speed up the game a bit.

I've noticed however that this seems to have made enemy escorts completely unable to detect me.

I've done maybe 6 convoy attacks and even when enemy boats come near me I don't seem to hear any asdic pings and they drop no depth charges. I'm in 1942 so this is particularly strange as i'm used to getting nearly destroyed after each convoy attack.

Is this a known issue with time-compression or have I just been incredibly lucky? If so is there a limit outside the base game tc limits where you can still play and be detected by enemies?

Edit: I'll add this is when I'm submerged, they're perfectly capable of finding me on the surface with radar.

x32 shouldn't be a problem but you can try a lower number if desired. However, the escorts in <insert version here> aren't very good anyway at any stage of the war.
Either are the aircraft.