Latency issue with VST instruments help

Nuendo
1

Hello all,
Hope you’re doing well.

So, I was looking for some advice/guidance regarding “latency” issues using VST instruments. I’m running N14. I know that lowering the buffer rate on my MOTU card helps to eliminate some of the latency. Currently, I have samples per buffer set at 512.
This helps, but I’m noticing a big impact on the Asio guard in Nuendo.

Is there some setting(s) in Nuendo I can adjust to help reduce the latency as well? I thought I had seen it printed somewhere but can’t find it.

Any guidance would be greatly appreciated.

Regards.

Mark

2

Which VST instruments are you using? What is the input device?

That’s pretty high for real time playing. Generally, I can make 128 work. But, 64 is better.

Is it actually creating any problems, though?

3

Latency is a function of several things.

  1. Your computer motherboard, as in it’s type of interface, (USB, FW, Thunderbolt, etc) and how good it is at handling this protocol.
  2. Your audio interface, and its driver. Some companies have good drivers, some suck. Motu’s generally are good.
  3. Which VI it is. Some are CPU hogs and absolutely will not work with low audio IO buffers, no matter what.

So, you need to tell us here which computer, operating system, which exact audio interface and drivers, and which exact virtual instruments.

Otherwise, we cannot really help much. Cheers.

4

Are you running CPU-heavy plugins alongside your VSTis? It’s always the plugins that will be drag on latency.

5

We need to keep in mind that different drivers yield different latencies when using the same buffer size.
E.g. with a SR of 48kHz and a buffer size of 128 samples a Focusrite Scarlett yields 13.6ms latency, an RME Fireface 6.7ms..
Furthermore a USB interface might have higher latencies than an internal card.

That being said, 512 samples is too much for real time playing.

1 Like
6

I have been using various libraries in my collection. EW, Trilogy, Keyscape, etc.
I will try lowering the buffer rate a bit more.
The only thing I’m noticing is the CPU usage is increased obviously when I lower the buffer.

7

Hello Neoqplease.

Running Windows 10 Pro
MOTU 24 I/0, MOTU PCI 424 Audio card. Old gear but still works.
VisionDAW Pro Core i7 Workstation / Custom
Intel Core i7-6900K - Eight Core 3.2GHz Processor
128GB DDR4 2133MHz Memory - Quad Channel Performance (4 x 16GB)
480GB SATA III Solid State Drive (SSD) Main Drive
Hot-Swap Cage for 8 x 2.5" SSD Drives
1 TB Performance SATA III Solid State Drive (SSD) Audio
1 TB Performance SATA III Solid State Drive (SSD) Video
1 TB Performance SATA III Solid State Drive (SSD) East West Libraries
WDC 4 TB NAS Class, SATA III, 7200 RPM, 64 MB Buffer HD
Blu-Ray Burner Optical Drive
Front Panel USB Access
Integrated Gigabit Ethernet Adapter
MOTU 24 I/O (main) / MOTU 2408mk3 (slave)
UAD-2 Octo Core PCIe DSP Accelerator
NVIDIA GeForce GTX 1060, 6GB, PCI-Express,
DVI-D, HDMI, 3xDP Graphics
(2) Dell UltraSharp U2515H 25" Screen LET Lite Monitors
Microsoft Windows 10 Professionalx64 Edition
VisionDAW System Restore

8

Has anyone read or know of an adjustment in Nuendo, that can be
made to deal with latency issues?

Thanks for your time everyone.

Mark

9

Activate ‘Constrain Delay Compensation’. Don’t know what VST FX you are running, but this will deal with any that are causing higher latency while you record.

10

In doing more research regarding, (as ckon suggested earlier) I came across this below.

So if I engage CDC while I’m trying to lay down a bass track with Trilogy, it will reduce the latency? Is this correct and if so, this would be applicable to any VST instruments with similar issues while recording?

In Nuendo 14, Constrain Delay Compensation (CDC) is a vital tool designed to eliminate latency-induced delays while recording live audio or playing VST instruments. It works by instantly disabling high-latency plugins—specifically those surpassing the threshold set in VST preferences—on record-enabled tracks, groups, and VST instruments.

11

Hey CKON…. WoW! I engaged the CDC button and all the latency is gone.
I can’t thank you enough. And to all the rest of you for your time regarding this
matter. I’m a little wiser thanks to all of you.

Best,.

Mark

1 Like
12

@mdslammer

Good to hear! CDC is a useful feature, sometimes overlooked!

(perhaps mark as solved)

Cheers