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Old 07-25-2019, 04:09 PM   #1
Human being with feelings
Join Date: Jul 2019
Posts: 7
Default Timing jitter / Stability

G'day folks,

trying out Reaper.

On Win10 64bit, on some intel quad core of a couple years ago with 8 GB RAM.
Whatever Reaper is doing, I have not seen higher CPU load in task manager than 10%, and RAM usage 20%.
The OS is on an SSD.
For now, my VST folder is on a mechanical hard drive.
I am currently using an Edirol/Roland UA-25EX audio interface via ASIO in Reaper.

A much *older* and weaker computer here is running SONAR 8.5 just fine, with a bucket of VST plugins loaded, and I'd be surprized if my *current* machine was somehow to weak for Reaper.

Yet, I only loaded 3 VSTs, 2 of which are actually being used: From vst4free, the 4...something bass (sampled/modelled electric bass), and the best rated acoustic drum kit from that site. (and saxophone, which is loaded but not in use yet)
Then I have 3 (active) audio tracks (and a few others on mute).
The metronome is active.

Now, when I want to record something, from once every few minutes to a couple times per minute, the metronome speed will seem unsteady. Also, sound playback can do that, which makes it rather hard to record something, as it's confusing.
It does not sound to me like audio buffer dropouts. (more like short pauses, how ever that's possible. I have done some audio programming, and I can't tell what this is)
Still, I tried different buffer sizes (via the Roland driver's setup program) - no perceptible change in outcome.

If I render a project to wav, the wav does not have glitches, other than me messing up due to confusion. Which tells me that the driver's buffering in recording direction works fine, there are no dropouts.

Is this a known thing on some systems, are there solutions?
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