I am trying to run three Alto Bluetooth Total 2 devices connected to a PC. Everything seems to run fine with two of them at lower volume levels. If I get the volume up on two it gets distorted. I can’t even get the PC to identify or locate the third. I thought it was an issue with the onboard BT chipset so I bought USB BT 5.3 adapter with external antennaes. This helped the distortion a bit but still not able to add the third device. Is BT junk or am I missing something here?

https://www.altoprofessional.com/products/bluetooth-total-2

Everything was already detailed