Thank you for the feedback to the fixture, Afx lighting beam 1R 120w.
rekordbox lighting engineers simulated on their end and advised below.
Please go to PERFORMANCE mode > Lighting panel > DMX Direct Control.
Change the CH5 value to around 50, you may be able to improve the fixture behaviors. If you still have any issues, please send us some screenshots of LIGHTING mode > FIXTURE LIBRARY, they will be able to provide you with further detailed methods.