What color are the Tracks in the mixer?
If they are yellow, then this is MIDI, if green then RealTracks (Audio)
In your MIDI / Audio drivers setup, does this point to an internal VSTi or similar?

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BIAB & RB2026 Win.(Audiophile), Windows 10 Pro & Windows 11, Cakewalk Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Session Keys Grand S & Electric R, Kontakt, Focusrite 18i20, KetronSD2, NS40M, Pioneer Active Monitors.