Host is CPU bound.
I implied that something might be needed to indicate a CPU bound host a while back (In-game indicators), but didn’t get much response on that.
If your host is CPU bound you will probably notice it through ghost hits and misses, such as arrows sticking in people for you but they do not take dmg etc (this is based on my understanding of how the game works, i.e. your game will draw for you what it considers “the truth”, such as drawing an arrow stuck in an enemy, but the host will decide wether or not that enemy took damage, and due to delay or similar that arrow missed in the perspective of the host so no damage was taken. Your “truth” differs from the “truth” of the host).