Not able to use Bluetooth headset for audio input

I'm trying to use a Bluetooth headset as audio i/o for Skype.

This is a Hackintosh running 10.12.6, using a Bluetooth dongle.

The headset connects, it even appears in my Sound I/O options in Sys Prefs ... but if I try to select it, the panel freezes for a few seconds and then disconnects.

Do I need Bluetooth 4 or something?

From System Profile:

Apple Bluetooth Software Version: 5.0.5f1 Hardware, Features, and Settings: Name: HackPro Address: 00-80-5a-40-c7-37 Bluetooth Low Energy Supported: No Handoff Supported: No Instant Hot Spot Supported: No Manufacturer: Broadcom Transport: USB Firmware Version: v9 c0 Bluetooth Power: On Discoverable: Off Connectable: Yes Auto Seek Pointing: On Remote wake: On Vendor ID: 0x0A5C Product ID: 0x200A HCI Version: 1.2 (0x2) HCI Revision: 0x00 LMP Version: 1.2 (0x2) LMP Subversion: 0x309 Device Type (Major): Computer Device Type (Complete): Mac Desktop Composite Class Of Device: 0x380104 Device Class (Major): 0x01 Device Class (Minor): 0x01 Service Class: 0x1C0 Auto Seek Keyboard: On Devices (Paired, Configured, etc.): ... BlackBerry 655: Address: 00-03-89-E9-48-B9 Major Type: Audio Minor Type: Headset Services: Hands-Free unit, Headset Paired: Yes Configured: Yes Connected: No Manufacturer: Cambridge Silicon Radio (0x3, 0xA5B) Class of Device: 0x04 0x01 0x200404 EDR Supported: No eSCO Supported: No SSP Supported: No ... Services: Bluetooth File Transfer: Folder other devices can browse: ~/Public When receiving items: Accept all without warning State: Disabled Bluetooth File Exchange: Folder for accepted items: ~/Downloads When other items are accepted: Save to location When receiving items: Accept all without warning State: Disabled Bluetooth Internet Sharing: State: Disabled Incoming Serial Ports: Bluetooth-Incoming-Port: RFCOMM Channel: 3 Requires Authentication: No