Does it really matter when under silent running whether you go at slow (~100RPM) or set the speed manually to 1kn (~50RPM) ?
Or is this just something we all play fore realism's sake ? I asked myself this question from time to time yet when I was in such a situation
To the topic:
I never experienced covettes being this annoying/dangerous. When attacking a convoy with more than 2 escorts, e.g. one of them was a destroyer and the rest flower corvettes, I didn't recognize any difference in their behaviour.
When I was chased by some escort for several hours, that was a destroyer. The corvettes had gone back to the convoy long before he left.
For modifying gameplay, I only use GWX 1.03.