That last fight scene was so bad. Pacing was off, choreography was horrible, background actors were visibly "trying to look busy", Unsullied still dying like they're plebs instead of best infantry in the world, the mask guys still follow a "one at a time guys!" tactic and their new battle strategy called "when a dragon comes let's stand still while it eats us" and "let's not throw our spears at Daenerys."
Before that, the pit fights were ok. Jorah was clearly the weakest link, being noticeably slow and unbelievable when he killed people, but the Water Dancer guy looked pretty good.
In fact, rewatching it, the Water Dancer looked really good. It's bad because having one good guy in a fight scene like that just highlights and underlines how bad the rest are. Jorah's last roll-kill was the worst...