I have three Clarett Octopres and one Saffire Octopre Dynamic connected to the RayDat. I am using a PC with an Intel 4770K and Windows 10. My DAW is Reaper but to test the problem I am using the Oblique Audio RTL Utility. I am testing on one Clarett looping output 1 back to input 1. I am using the RayDat as the clock source and the Octopres are syncing via ADAT. Each time I power cycle the Clarett, the latency changes by as much as 89 samples. It doesn't matter if the other Octopres are powered up or not. Also, if I cause the Clarett to resync by changing the source to something else and back to ADAT, the latency changes in the same manner.
I can also see the problem if I do the loopback test from Reaper.
The RayDat is new and I have installed firmware revision 16. The driver is 4.29.
Thanks for any help.
I haven't tested the Saffire Octopre. I'll do that next.