Reason + Loopcloud = Audio dropouts & glitches

[Muttonheads]

Hello !

I recently installed Loopcloud, and I am having sound problems. As soon as I sync Loopcloud with Reason, I get audio glitches and dropouts. After doing my little investigation and trying a whole bunch of tests (bios, drivers, windows updates, power plans, dpc latency, ...).

I found two temporary solutions:

- Disable "Use multi-core audio rendering", that solves the dropout problem but at the cost of a big loss of performance, my big projects no longer run if I deactivate the multicore mode.

- Change the affinity of the CPU with Reason (Task Manager> Set Affinity), if I deactivate the CPU0 (see below), I no longer have a dropout problem, and the performance remains good.

I use Loopcloup with Live and FL Studio without any sound problem. I only have this bug with Reason, so I conclude that there is a problem with the way multicore is handled in Reason.

Have other people encountered this kind of problem? Any fix?

Reason_Affinity.png (40.19 KiB) Viewed 492 times

[rgdaniel]

I have "Use Hyperthreading" UN-checked, and "Use multi-core" the other audio card one CHECKED. No affinity boxes un-checked, in fact that's the first time I've seen that setting in Task Manager. No issues with Loopcloud on my modest but decent 4 core i7-4770 PC.

[Loque]

Did you set your computer power saving settings to "highest performance"?

[Muttonheads]

Yes, my power saving settings is set to "highest performance", also 'Use Hyperthreading' is unchecked (bad performance with my configuration).
There something wrong with my CPU0 core, something conflicts with Reason, yet I haven't found anything, I don't have DPC latency.

When I have audio drops, my mouse and screen freeze for a few milliseconds, maybe a conflict with the graphics card ? But by disabling it the problem persists. And like I said no pb with other DAWs, it's specific to Reason's multicore engine.

[Loque]

A freezing mouse is suspicious...I speculate there is something other going on with your hardware or drivers, but no idea what...