Thank you very much for reporting this issue.
Could you please try setting a Videowall Disconnect Delay value (e.g. 20) in spacedesk Driver Console app and check if it will help with the disconnection issue.
If it did not help, please send us the diagnostic files on your primary machine.
Just go to spacedesk Driver Console -> Diagnostics, make sure to connect all the 5 spacedesk viewers from your Android TV then click the „Save All Information“ button.
PS: Saving all information will take a few seconds, then please send us the whole folder which contains all the diagnostic logs collected.
Please right-click the folder -> Send to -> Compressed (zipped) folder, then attach the *.zip file in your next reply.