I have the "stop" problem also. I cannot resume course after loading. Have to increase speed manualy and after a while resume the course.
What I ment by droping the speed to 0 during a storm is that the speed goes (because of big waves) 9-7-8-6-7-5-6-3-5-2-3-1-0.....
After reaching 0 doesn't change anymore until I decrease TC.
It happens only with TC higher than 128x.
With lower TC it goes from 9 to 6 and back.
I also find unrealistic to have 10m waves where the total depth is 15m
