im using Cubase 9.5 updated to last version available with RME HDSP-Aio allso with updated drivers .
synths - SH101+ tubbutec midi kit conected through the RME midi in\out ports sending midi clock from cubase to those ports through “project sync page”
the timing always has unstable issues and after few bars its getting off sync . same thing happends with MS20 classic connected to Beatstep Pro via cv\trig ins from the MS20 to the Beatstep Pro CV\GATE outs and from Beatstep Pro USB to my PC in order to get sync from Cubase. same thing here the bpm drifts for example my project is 145 BPM when i’ll play it the Beatstep Pro clock jumps from 145 to 144,142,146,145 and does not getting any solid timings . i tried to eliminate each instrument by itself in order to see if the problem comes from 1 of my other stuff but even if its only 1 instrument connected it still not stable with timings . tried to get cubase “use external clock” from Beatstep Pro but cant get it to work . any solotions ?