If you’ve installed the driver but Bluetooth is still unstable, try these fixes:

As the battle between E-UB5 and BT-Bug raged on, EDR continued to optimize the dongle's performance. It fine-tuned the antenna settings, adjusted the data transmission rates, and even implemented a special "BT-Bug shield" to protect against future attacks.

If you don't have a disc drive, you can typically find the Realtek Bluetooth 5.0 drivers on the manufacturer's support site or reputable tech repositories like Run the Installer:

: Look for the Bluetooth icon in your system tray (bottom right corner). Troubleshooting Driver Issues