I heard back from Support late last night again.
we have a known bug with the bandwidth limit for the SSID in Firewall and traffic shaping cannot be set to higher than 100Mbps.
Our Dev team is working to resolve this issue from the backend and this could take a few weeks for this to be resolved.
They went on to add -
There is a workaround at the moment, by going to Traffic shaping rules > Select the bandwidth > detail then type in 0 > Save the settings.
After change saved, the bandwidth on the dashboard will still showing 100Mbps but from the backend, the AP will set the bandwidth to unlimited.
So, there it is. For my networks, I'm not going to go through and change anything until I hear complaints about speed. From the testing that has been done so far, it might not even be limiting at all. I will, however, need to watch the Guest SSIDs to ensure those are limiting.
Thanks for all the input, guys!