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newplasticmachine
Topic Author
Posts: 9
Joined: Sun Mar 10, 2019 6:21 pm

SPD 30 midi trigger strange midi latency issue

Thu May 21, 2020 8:42 pm

Hi all

I'm using an Roland SPD 30 as a midi trigger to trigger drum samples in Drum Machine Designer.
I'm in Low Latency mode and monitor without any latency when I record.
However, the midi information recorded into the track is delayed between a 1/16th and an 1/8th note.
When I play the track back, it is delayed. The midi notes are clearly not in sync
This only happens on existing sessions, if I start a session from an empty template, I have no issues.
My buffer is at 128.

I turned quantize off, I tried multiple sound libraries, as well as different drum plug-ins, all the same exact result.
Turned Low Latency on and off, restarted, nothing changes. I have an Arturia keyboard, and this does not have the issue, just the SPD 30.

The SPD-30 is connected via USB to my 2017 iMac, running Catalina, Logic 10.5. UA Apollo duo, 64megs of ram.
Mac OS 10.15
2017 iMac 27” Retina
500GB Internal SSD
64gig ram
Logic Pro x 10.5
UA Apollo Twin Duo
UAD2 Satellite - OCTO
UAD Powered Plug-Ins: up to date
10TB Raid 0 OWC
 
newplasticmachine
Topic Author
Posts: 9
Joined: Sun Mar 10, 2019 6:21 pm

Re: SPD 30 midi trigger strange midi latency issue

Fri May 22, 2020 3:33 pm

Hers a bit of an update that is even a little more confusing:

I opened one of the projects I was giving me this problem.
I froze every channel and had no sync problems.
So then bit by bit I unfroze the tracks, reloaded the plug-ins, until I was back at the state I experienced these sync issues.
And didn't have that sync issue.
Mac OS 10.15
2017 iMac 27” Retina
500GB Internal SSD
64gig ram
Logic Pro x 10.5
UA Apollo Twin Duo
UAD2 Satellite - OCTO
UAD Powered Plug-Ins: up to date
10TB Raid 0 OWC
 
newplasticmachine
Topic Author
Posts: 9
Joined: Sun Mar 10, 2019 6:21 pm

Re: SPD 30 midi trigger strange midi latency issue

Sat May 23, 2020 8:10 pm

I think I found a fix.

I had this latency problem ONLY in Drum Machine Designer. Not UltraBeat or other keyboard instruments.

The fix that's working so far is to Turn Plug-In Latency Compensation off, and turn off Low Latency Mode

Preferences > Audio > General tab
Mac OS 10.15
2017 iMac 27” Retina
500GB Internal SSD
64gig ram
Logic Pro x 10.5
UA Apollo Twin Duo
UAD2 Satellite - OCTO
UAD Powered Plug-Ins: up to date
10TB Raid 0 OWC