I studied your solution. I have fixed Icaros VICE settings according to your video or almost, however I can't do the same for Janus-UAE.
Disabling the idle thing on the emulated processor kills AROS host speed. In the ideal Icaros world, the user should be able to use both M68K and i386 programs concurrently, so I have to reserve CPU resources for both. Disabling the idle on STOP instruction option gives Janus-UAE the maximun priority over any other task running on the host side.
However, a mechanism that would give an app different settings already exists: you can create a shortcut in the AmiBridge menu. Please try with EaglePlayer. Once you are running EaglePlayer only through its shortcut, press lAros+Tab to switch to x86 side, open the Janus GUI, disable "idle on stop" option and save. This setting will be tied to EaglePlayer only.