Behringer XR18 and latency

A quick question. Do any of you have this mixer/audio interface? The fastest I can manage is 1024 samples, so about 23 ms. I get xruns both with JACK and ALSA at lower settings, at both sample rates (44.1k, 48), and either with 2 or 3 periods. I have WiFi on because the mixer can only be controlled through WiFi ( :roll_eyes: ).