Can't use more than 5 monitors on Monterey using AirPlay

[mjabraham]

Hi, I'm using a Targus DOCK520USZ with MacBook Pro 2019, four little Asus monitors and an iPad Pro. I can't for the life of me figure out a way to get it to work with 6 monitors. If I go to AirPlay while the other 5 are live, it gives me the error A miscellaneous error occurred (-501)'. I have a TV in the room that used to work with AirPlay as well, and it doesn't do anything other than show a black screen for a bit and then go to the AirPlay start screen. I know that both of these devices work independently with AirPlay, and if I initiate the iPad on AirPlay prior to starting DisplayLink, it shows me the iPad screen and 3 of the Asus monitors and my laptop, but one of the ASUS monitors doesn't activate.

Is there a limit that I'm unaware of? What can I do?