Have you tried Tempo Reset, the small button next to the tempo slider?
Change the speed of a song being played with sync enabled
What is the fastest way to change the speed of a song playing with or without sync enabled?
Also, is there a procedure that returns a song playing to the original pitch without having to drag the pitch slider back and forth until the original speed is reached?
On my RX3 , I don't have the Tempo Reset button...
Sorry thinking CDJs. Because it protects from a mistaken deactivation of SYNC, you still need to disengage and then move the pitchfader to get back to the other bpm.