Apollo Plugin Latency

Poesque

Active Member
New Apollo user here. I am using a Firewire connection to an approved card on a Windows 7 PC with Cubase 8 as my DAW. I have just started testing and dabbling at this point but I have encountered a latency issue which will be a huge disappointment if it is not resolved.

The issue is when I try to utilize the DAW for monitoring. I am running at a Sample Rate of 44.1 kHz and a Buffer Size of 64. I started working from these as that it was I have successfully worked from with my Saffire Pro 40 units (Firewire 400) in combination with my UAD Octo card. In that scenario I would get an Input Latency of 1.837 msec, Output Latency of 3.583 mses and UAD-2 Plugin Latency of 1.45 msec (64 samples). With the same settings/plugins on the Apollo, I am now getting a UAD-2 Plugin Latency of 11.61 msec (512 Samples). Strangely, if I set the Saffire unit as the audio device in Cubase it will only revert to the 64 Sample UAD-2 Plugin Latency with the Apollo turned off. Note that I am not attempting to use oversampled plugins such as the Ampex, as these have always bumped the latency. I also muted all channels within Console and closed the application.

This is very important to me due to the use of VST instruments within my workflow, as well as the desire to retain the ability to track through the DAW with various UAD and native plugins without significant latency. The net latency with the Saffire units was 6.870 (including input/output/UAD2. With the Apollo it is now 17.03, which is two and half times as long and not feasible for live tracking of vocals, instruments or virtual instruments. I recall seeing something regarding Virtual Outputs in the Apollo software manual which may sidestep this for virtual instruments, but it seemed like a cumbersome fix and not applicable to audio sources.

I assume this may be due to the fact that the Plugin Latency is factoring in utilization of Apollo DSP power, which requires the signal to go to the Apollo, through DSP processing, back to the DAW and back again to the Apollo for monitoring. If this is the case, can I block the Apollo DSP resources while DAW tracking and use it as an audio device only? Otherwise, relative to my needs and workflow I might have invested in two silver bricks, as the features gained may not actually weigh up too well against the performance losses. :sad:
 

Poesque

Active Member
Apollo Plugin Latency (Unacceptable)

I am not sure if this is in the manual and if so I missed catching it previously, but according to the web support page for Apollo:

When Apollo is connected via FireWire, UAD plug-ins used within the DAW run at a 512 minimum buffer size in order to operate reliably. Apollo’s dynamic buffering enables lower hardware I/O buffer settings (256, 128, 64 etc.) while maintaining a stable 512 buffer for UAD plug-in processing.
Is there any way to turn off Apollo DSP allocation as a temporary aversion to being subjected to this unacceptable delay? Otherwise it ruins any chance of effectively tracking live through a DAW, which I was able to do with acceptable latency in the past using old gear.
 
Last edited:

DanButsu

Administrator
Forum Admin
Moderator
Pro tools has Low Latency Monitoring that that bypasses plugins on the record enabled tracks. What daw are you using? There might be a similar feature!

You can also manually bypass the pluging or make them inactive.

You could try turning off the UAD stream by clicking the blue UAD button. Not sure if it still works and if it will negatively affect the Apollo's operation!
 

syah

Active Member
Is there any way to turn off Apollo DSP allocation as a temporary aversion to being subjected to this unacceptable delay? Otherwise it ruins any chance of effectively tracking live through a DAW, which I was able to do with acceptable latency in the past using old gear.
No I don't think so. Use an Apollo (console plus effects) or another soundcard for that.
 

billybk1

Shareholder
If you want near latency free recording/monitoring with up to (5) UAD plugins in an FX chain you need to use an Apollo on the front end. If you want low latency recording/monitoring from your DAW inserts using only a single UAD plug-in with Live mode enabled (multiple plug-ins in an FX bin will add cumulative latency and higher native CPU usage, so not recommended ) you need to use a PCIe based UAD device (PCIe card or an Apollo/Satellite running PCIe over Thunderbolt). Worst case is using FW, as it's required added buffering will always run @ 512 samples and does not work with Live Track mode, so it is recommended for mixing use only.

Cheers,

Billy Buck
 
Last edited:
UAD Bundle Month
Top