Sorry for the confusing message. The doorbell was ringing and I had to finish the post :-(
I was hoping the principal issue is clear. But I wellcomed you suggestions and will elaborate on my situation.

The windows laptop (Lenovo Yoga) is connected to my Yamaha keyboard via the headphones audio jack from the laptop. From there I want to use the best possible sound source to playback the songs of Biab so my intention was to try out soundfonts of which I have plenty to try out in contrast to the Coyote DXI from Biab itself. For this reason I was picking as MIDI output driver CoolSoft VirtualSynth as to try out the various Soundfonts I can determine in this SoftSynth. Only trouble is, that I prett much never now, if I found a different sound source than Coyote that is build in Biab.

With the settings I had then, I experienced a huge lag between audio and midi sounds while playing a song.

So setting it to ASIO did solve apparently my latency issue --> Thx DrDan. But I am not sure, if I really listen to Coyote or to Soundfonts from VirtualSynth. I flagged the "sent to midi through " checkbox below the "VST/DXI Synth" checkbox - otherwise I only here audio sound with ASIO activated.

I assume the 2nd note from Jim will tell me something when using the mdi through option - but I am not perfectly clear if that means, that I use the soundfonts in this case as it is my intention.

Thanks for all your wise and helpful comments, while I try to get out of my novice status since ....forever - with this ilustrous program.

Looking forward to hearing from you (all) ....

Yours sincerely
Stefan

DAW: Studio One 6.2 Pro
Interfaces: StudioLive AR12c, Scarlett 8i6
Windows 11 Professional
AMD Ryzen 9 4900H, 16GB, 3,30 GHz