I have a Behringer interface. Most of the time I use the proprietary ASIO drivers with the interface, but not when I’m using Spectralayers. When I use Spectralayers as an external editor with Reaper, with both apps set to ASIO, I get playback issues with Spectralayers. When I set Spectralayers to WASAPI, however, the playback issues go away.
P.S. I’m not telling anyone to like my idea. I’m just telling everyone what I do to avoid a problem. 