Muscle System explodes during Emil's ROM

Hello everyone!

As the title suggests, I am continuing to encounter a problem that is not mentioned anywhere (since it seems to me that most people are working on lift weight animation).

I am trying to simulate muscles using Emil’s ROM animation.

Despite continuously changing the values of “Num Sub Steps,” “Num Solver Iterations,” and “Omega SOR” during precise skeleton movements, I find that the muscles explode completely and worsen frame by frame (as shown in the screenshot).

Correct frame:

Next Frame:

Is anyone else experiencing this issue? Do you have any advice to share?