Try this as Noel suggested.! Click on the check box “useVSTi/DXi synth” and from the drop down below that add The VSTsynthfont64. And try with your AudioBox just to make sure


HP Win 11 12 gig ram, Mac mini Sonoma with 16 gig of ram, BiaB/RB 2026, Reaper 7, Harrison Mixbus 11 , Presonus Audiobox USB96