If you’re using docker then settings wise everything should be fine.
As for XMR on docker, you will only need to enter XMR public address in CMS settings it’s usually something like:
tcp://ipaddress:9505 or tcp://yourdomain:9505
That certainly is interesting, if after cache clear / restart it would still have problems, then I’d suggest enabling auditing for one of those new displays (presumably all of them behave the same way?) and see if they will log any specific relevant errors on CMS log page.
You could also run the verify all on Modules page, restart your player and see if that will make any changes for the better.
Failing that, you can take it one step further with this How to get a Windows Player log for advanced debugging
The path does not need to be C:\Users\USERNAME\Documents\Xibo Library\log.txt but library usually is a good place to store logs - if you’ll be using this method, please do make sure to use new display profile and to switch it back when you collect enough logs.