Windows: Fluctuating Master MIDI clock

My master clock out signal isn’t holding a constant bpm. when I try and sync my gear up for recording it makes my synthesizer’s bpm to fluctuate wildly. I’ve tried reinstalling renoise, I’ve tried bypassing my sound card and I have tried it with my labtop as well all with the same result. Is anyone else having this problem with their copy of renoise right now?

What version of renoise, what Os?

renoise 3.2.2 Windows ten

Sorry for the late reply. Try using ASIO and lower buffer sizes on Windows to improve the MIDI timing on Windows. See Windows: Midi Out Timing/Jitter - #8 by taktik for details please.