I tried two Laptop IdeaPad 5 Pro 16ACH6 with AMD Ryzen 5800 and they have all the same problem:
The bluetooth is super instable... after about half an hour the bluetooth dies and disappears from the device manager too. The only way to make it work again is to turn off the PC and start again pressing the power button for more then 30 seconds.
I have tried, updating drivers, updating BIOS, restoration windows, factory data reset but nothing works.
Microsoft and Lenovo support didn't solve my problem so I'm here.
Is it still under warranty?
Sounds more hardware related..