Hi Hunterbear....
I run at 100% realism using RUb 1.43 and a few other mods....I don't know...I have not had any major torpedo issues.....perhaps it is because I try to get within 600m of my target; I rarely go for the long shot. With only 10 to 20 seconds running time, perhaps its hard to have a quick detonation...I do recall in
Hitler's U-Boat War that some early detonations happened
very quickly, at least causing reverberations to the launching U-Boat!
-Jeff