I recently installed Synapse Beta while looking for an alternative to the unstable Synapse 3.
It's really nice because there are no issues that I had with Synapse 3.
However, there is a slight RGB issue.
Everything seems to work fine, but some of the LEDs on the media keys of the BlackWidowElite do not work.
All LEDs light up normally on Synapse 3.
It seems that some of the LEDs on the BlackWidowElite were not allocated in Synapse Beta.