Martin Widö

Do the retime on the first as a reference for the tempo you want. Then you don’t need to simulate hours to find out.

If possible I would try to split them. At least work with the emission part separately and then if needed run all emitters in same container at the end.

I think the explosions needs much more initial "punch".
Do a retime test remaping the first 30-40 frames of the fireballs into 3-5 frames.

The solver is only reading the attribute from SOPs on creation frame, so if you check your geometry spreadsheet it most probably is 0 thru out the whole sim.
You could update the attribute or write your activision code inside the solver using a pop wrangle.

The floating.
They catch momentum when moved from intersection on first frame.