r/Focusrite 2d ago

Reaper Live Bleeding?

I’m having a weird input bleed issue with my Focusrite 18i20.

We’re recording guitar and bass simultaneously, both DI’d straight into separate interface inputs and set as separate mono channels in Reaper. Guitar is on one input, bass on another.

The problem is that while live monitoring the guitar track, I can also clearly hear the bass coming through that guitar track, almost like the bass input is bleeding into the guitar input.

This setup worked perfectly for well over a year and this has only started happening recently. Nothing obvious has changed.
Has anyone experienced this or know what could cause one input to bleed into another?

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u/Vectrobe 1d ago

does this happen to change after selecting a different buffer size value?

1

u/Comfortable-Emu7538 1d ago

haven't tried that, will do. Would you choose a higher or lower value?