I'm running 11 at the same time, give me a break
Also - Blackrock Caverns has major issues. The booster is constantly standing waiting somewhere whilst the RaF's are standing elsewhere for a tag ~ Also when they die, they just fly around at the top of the Blackrock lava room endlessly.
More specifically, the booster will "Tagging the RAFs at the deadend-bridge entrance." and run off without standing there to check if everyone's there. This results in 90% of my runs where the RAF's haven't even arrived yet and the booster doesn't give a shit it just tags thin-air and runs off. Then I'm stuck with the booster waiting elsewhere for them to arrive, and the RAF's were never tagged.
Trust me, this is the case ~ This'll be 27 characters leveled on Symbiotic now and this second to last profile just irritates me to much lol.