Suddenly, latency!

[IRON RAIN]

Hi- Been using Sonar on a Dell PC. i5 processor and 32 GB of RAM. Using a Focusrite Solo for an audio interface.

Suddenly -a good 1/2 second of latency on audio inputs (only in Cakewalk)? No lag through windows.

Tried different drivers. Fully uninstalled/reinstalled all Focusrite. Tried all the tricks with Power Plans, USB settings, etc.

Ran LatencyMon and it says all is fine.

Weird thing is changing the buffer sizes in Sonar have no effect on the delay. At all. 

ANY ideas appreciated!

Edited January 5 by IRON RAIN

[Sock Monkey]

First to be clear you are plugged into the Scarlett and when you listen to your Guitar?/ Vocals in the monitors or headphones you are hearing the signal delayed by a lot? 
Have you checked your monitoring set up as in are you using the direct monitoring or is there a software mixer involved? That will also have settings that might have changed . 
 

If you are  monitoring the sound after it has passed through your system then ya there will be delay but that should change with buffer settings. 
You did reboot the computer? 
ASIO will be the lowest latency. 
Try using a fresh blank project. 
 

Another long shot but you didn’t happen to have just installed another music app? Some install generic driver s that corrupt your system. Look in Preferences/ Audio/ Sync and Caching and make sure it says Focusrite in the Latency adjustment box. 

Edited January 5 by Sock Monkey

[IRON RAIN]

Thanks for reply! Yes, directly into Scarlett there was delay. I say was, because after trying a fix to the Power settings, things have improved.

It was suggested to change Processor Idle Demote/Promote Threshold values to 100%, it seems to have done the trick.

Thanks again!

[David Baay]

Dollars to donuts its due to an FX with a lookahead buffer. Common offenders are convolution reverbs, linear phase EQ/Compression and transient shapers. If the FX isn't in the path of the track you're input monitoring, you can click the PDC button in the Mix Module to override Plugin Delay Compensation on input-monitored tracks while tracking. But if it's on the Master bus or otherwise in the path from that track to the ouput, you'll need to disable/remove it.

Edited January 5 by David Baay

[Noel Borthwick]

Check what driver mode you are using and what the buffer size set in preferences is. WASAPI shared mode introduces a fixed latency. If changing the buffer size has no effect on latency heard, the problem isn’t inside Sonar, its in your monitoring path. This is not a CPU issue so power settings etc will not affect anything.
Always test latency with an empty project by adding a single track and input monitoring that without any plugins. Ensure that you are getting the lowest latency there by setting your buffer size accordingly.

[Byron Dickens]

13 hours ago, David Baay said:

Dollars to donuts its due to an FX with a lookahead buffer. Common offenders are convolution reverbs, linear phase EQ/Compression and transient shapers. If the FX isn't in the path of the track you're input monitoring, you can click the PDC button in the Mix Module to override Plugin Delay Compensation on input-monitored tracks while tracking. But if it's on the Master bus or otherwise in the path from that track to the ouput, you'll need to disable/remove it.

This is exactly why I wait until mixing to add any effects.