I fixed TF2 by setting texture setting to medium, and I got to witness the terror of the new phlog in person. We cornered the pyro but he taunted and became invulnerable. I had no other options so I just started dancing and got burninated.
As a heavy I went as far as I could and kept shooting even when they we're invulnerable so that once they lose there uber, I would have had the upper hand and be able to damage them first. I't worked, I was able to kill them with more than half of my Hp gone.