i tried to diggin in IRQ setup for low latency. situation is much better;

48000/64/3

but I would like to have maximum :)

before my last ideas gonna to die, I would like to ask if my asound.rc looks good:

pcm.!default {

    type plug

    slave { pcm "jack" }

}

pcm.jack {

    type jack

    playback_ports {

        0 system:playback_1

        1 system:playback_2

    }

    capture_ports {

        0 system:capture_1

        1 system:capture_2

    }

}

ctl.mixer0 {

    type hw

    card 0

}

my setup:
archlinux, presonusVSL 1818,

Fero