import following registry (save as .reg file, and click).
Code:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\\SOFTWARE\\Quanta\\QtZgAcer\\Settings\\TaskBar Icon]
"Support OnScreenDisplay...
My 8200 has same problem. After some research, I found the burner always burn at CLV mode. Some media advertise as 8X, but only 2x - 6x at CLV mode. My experience is the DVD+R/RW has higher CLV speed than DVD-R/RW。
You don't need set default Windows Audio Device to Bluetooth. AcerVCM use some technology named "Realtek HD Audio Data Rerouter" (RtkBtMnt.exe), It support dynamic switch audio stream, but add huge latency.