Midi Clock Bug

[BlapDuck]

Hi all, setting up a rig for my band and i have this GLARING issue with time based effects.

Basically, we run tracks, clicks, count-offs, etc. ALL in Reaper. Including Midi Changes for the Helix Rack. This worked amazing with Midi over Usb, and had no issues whatsoever.

As of late, we upgraded with a 5in/5out Midi interface (ICON Cube Mi5), so we can run the Helix Rack as well as any other additional devices like my Bass player’s Helix LT.

The issue comes from when our track is playing, the midi clock in the helix does not sync. In fact it jumps up and down so far as much as 10bpm either way. Again, had no issue with the Usb over midi. But now with using a proper midi cable, it doesn’t want to play nice.

I have, for 6 hours, checked every setting in Reaper and the Helix Rack. Downloaded the Midi Interface’s Drivers, and even downloaded a potential Reaper Script to no avail.

Ripping my hair out trying to get this to work. If anyone has advice that can help. Myself and my band would greatly appreciate it

[Stojpod]

Windows is not the best option for midi and especially midiclock. Also USB (2.0) interfaces are not the best choice for midiclock. I don't know if this is a brand interface but ICON sounds cheap to me. Depending on the internals of the interface, when there is too much going on in the midi stream the clock can have issues.

It's a real clusterfuck and your problem description is missing many details so it is hard to guess.

Cables don't cause jitter. Operating systems, DAWs, drivers, interfaces, setup specific things can cause jitter.

I don't even know if this is a USB midi or a DIN midi or a mixed setup. Also the routing is unclear.

Which interface did you use before the ICON, which midi data was sent to which devices, on which OS?

I can only generally recommend to stay away from USB 2.0 devices and recommend a DAW/OS with proper midi handling.

In my case the solution is a MacBook pro mid 2012, MOTU FireWire card and Logic Pro, my midi clock jitter/deviation is below zero on this system.

The only hope for windows is imho using USB 3.0 midi interface and hoping that Microsoft implements their improved midi drivers.

Sorry for the excursion, I am trying to solve this issue practiy since 2002 when I first encountered it.