Same with Bias FX?
Hi,
I was going to post a similar question - maybe something has changed recently?
I've been using Reaper x64 on Windows, Mac Mini (2018, 12 core, SSD, 16GB ram) with Positive Grid Bias FX (for guitar amp modelling).
A few days ago I noticed that I'm getting an audible delay (estimate 50ms or slightly more, max 100ms) between direct monitoring (via Steinberg UR12 audio interface) and the plugin output. So between plucking the guitar string and getting processed sound there is an off-putting amount of delay.
This doesn't happen when using the plugin standalone and it doesn't happen in other tools (MAGIX Samplitude Music Studio has no noticeable latency at all). I've tried different audio systems (ASIO, WASAPI) and block sizes/sample rates. Tried a latency measurement using ReaInsert and got a reading of -9 samples, which is quite a small amount I believe. Getting a reported latency of 11ms AISO at 48khz, 256 samples, so basically I think it's the VST hosting process that's slow, not the audio devices or the CPU (CPU is at 4% on avg).
Have tried with an alternative plugin (Ignite Amps Emissary and ReFIR) and get a similar problem.
Normal Playback is fine, audio is in sync with drums/metronome etc, it just the live monitored fx that lags.
Is there any way to diagnose what is to blame for plugin output latency or a why to compensate or fix? I played with toggling audio driver reported latency and offsets etc but I think that's more to do with round trip of the audio interface and didn't seem to make a difference.
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