Hi @jamesashcroftgd, I had the same problem, In my case I fixed it. Check in the wordpress panel, in the configuration of the theme, look up for the option “Show only profile with avatar?” If you have checked (Yep), try turnoff, activing nope...
The systems will take to much time looking the users with avatar and that will be a lost time, so this is not a good idea if you have a lot of users…
Try it and tell me if this works…Try it and tell me if that work…