Could you try soloing the bass or drums separately to see if they still give problems.

Also, there is an option (I think in Mac's) to disable fast generation. In Windows it is under Song Settings, maybe Command-N on the Mac.

Tick that item and see if that changes/improves anything.

Welcome to the forums.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
2017-10-28_11-42-35.jpg (94.48 KB, 72 downloads)

BIAB & RB2026 Win.(Audiophile), Windows 10 Professional & Windows 11, Sonar Platinum, Cakewalk by Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Kontakt, Focusrite 18i20, KetronSD2, NS40M Monitors, Pioneer Active Monitors