OP-Z USB audio sampling rate / MIDI > Ableton

Hi all,
Trying to get to the bottom of an issue i’m having with OP-Z USB audio & MIDI in Ableton…if i set Ableton’s sampling rate to 44.1kHz, all is well, but if i set it to 48kHz, MIDI clock sync changes BPM on the Z…Ableton BPM 96 is 45BPM on the Z so patterns do not play in time with the Ableton tempo…any ideas? Is the OP-Z 44.1kHz only?

Please advise and thanks!