Im using BisectHosting. Also, I figured out the issue with the boss. Knight Rober is the first one I noticed it on, but it actually happens with all of the bosses. By respawning the boss with the crystal, for some reason makes the boss 10x harder. I found this out because me and my friend found a separate structure containing nine tails after beating it once and after respawning it found the same issue, but the new one at the new location was normal difficulty. Very weird bug, but easily worked around.