Homekit All off Scene for 5 units from one CoolMasterNet

[EnvyTechTeam]

Hi Team,

We have created a Homekit scene that turns 3 of 5 AC units off.
Generally 1 unit is still left on when the scene is triggered.
If you trigger the scene again it will turn the 3rd unit off.
It's generally random for what unit stays on.

Controls in general seem fine and do not appear to miss commands.
The homebridge log shows commands have been sent.

The unit that misses the comand will reappear as on in homekit generally after 10-30 seconds.

Is it possible too many commands are being sent at the same time and the CoolMasterNet cannot process?
Is there a way to fix this?

Please let me know if you require any additional information