Hi ChrisGrasp smittycodes ,
Regarding any differences on gateway functionality between version 10.7.4 and 10.7.3: a toggle was added to disable WebSocket for onprem gateways, because we had received feedback that WebSocket gateway was slow. If that applies to your scenario, I'd recommend disabling it to see if it makes a difference.
To disable WebSocket onprem gateway:
1) On a terminal run this command: defaults write com.microsoft.rdc.macos ClientSettings.DisableOnPremWebSocketGateway 1
2) Quit and restart the ap
Please let us know if that makes a difference.
I don't want to say for sure yet, but this seemed to fix it for me on the latest "Windows App" from the app store. And I am connecting through a gateway. I did reinstall prior to that and try a few old versions so maybe it's something to do with that. Though I did try reverting with "defaults delete com.microsoft.rdc.macos ClientSettings.DisableOnPremWebSocketGateway" and the lag seemed to return, so I'm leaning towards this working. I don't control the gateway so can't check out anything there.
My issue was that mouse was insanely laggy and would only work on 10.7.3 OR if I switched to a lower performing mouse.