Open Discord
Go to User Settings
Select Connections
Disconnect Spotify
Open Spotify
Go to Settings
Turn off Hardware Acceleration
Turn off Crossfade
Turn off Auto-Duck
Open Discord
Go to User Settings
Select Activity Privacy
Turn off Display current activity as a status message
Go to User Settings
Select Voice & Video
Turn off Attenuation
Check for any active voice channel or call in Discord
Leave the voice channel or call
Restart both Discord and Spotify
Update Discord to the latest version
Update Spotify to the latest version
Clear Discord cache
Reconnect Spotify if needed
Reinstall Discord if the issue continues