2.4 GHz Wi-Fi speed drops drastically when Bluetooth is turned on
The single Wi-Fi/Bluetooth combo card shares one internal antenna, causing packet collisions between Bluetooth audio/peripherals and 2.4 GHz Wi-Fi bands.
Internal desktop parts run on harmless 12V DC voltage and cannot shock you. Simply unplug the wall power cable first, then touch the unpainted metal case frame to ground static electricity.
Common Symptoms & Tells
- Wi-Fi speed drops from 50 Mbps down to 2 Mbps whenever Bluetooth headphones or mouse are connected
- Audio cuts out or crackles when downloading files over Wi-Fi
- Turning off Bluetooth in Windows settings immediately restores normal Wi-Fi speeds
Interactive Fix Checklist
0 of 4 steps completedConnect to your router 5 GHz or 6 GHz Wi-Fi band
Open Wi-Fi settings and connect to your router 5 GHz network (often named NetworkName_5G). 5 GHz is completely immune to 2.4 GHz Bluetooth radio interference.
Enable Bluetooth AMP / Coexistence in Advanced adapter settings
Open Device Manager > Network adapters > Right-click Wi-Fi card > Properties > Advanced > Set 'Bluetooth AMP' or 'Coexistence Support' to Enabled.
Change 2.4 GHz channel width in router settings to 20 MHz
Log in to your router settings, navigate to 2.4 GHz wireless, and change Channel Bandwidth from '40 MHz' to '20 MHz' to reduce spectral overlap with Bluetooth frequency hopping.
Screw in external motherboard magnetic shark-fin antenna
If using a desktop PC, ensure the dual-wire antenna included with the motherboard is screwed securely into the rear golden coaxial RP-SMA connectors.
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