I am going through the steps of setting up Cantabile 4 V4357 on a WIn10 box that I use exclusively for VSTs. Over the years I have accumulated some great VSTs. They are 32bit. This machine will run these VSTs all day long as configured, using a different VST host package.
I have come across some newer-to-me instruments that are either labelled as 64bit or VST3. I need a different host than what I have been using, so I decided to install Cantabile.
Here’s the bug portion… VST: Usual Suspects JE-8086 (JP8000 Emulator).
Any selected patch seems to play fine. That is until I use the mouse over the VSTs GUI. The second I do that and for as long as the mouse is moving the audio stutters. The Cantabile system monitor shows heavy CPU utilization. I have the same JE-8086 files installed on my DAW PC and loaded up through Studio One 6; it does not stutter there. Other VSTs that are detected by Cantabile do not exhibit this same behaviour. This may be something very unique to this VST and Cantabile. When I exit out of this host and open the other one all those plugins work properly, JE8086 is not supported by that host so I cant make a direct comparison.
I haven’t tried the Nord emulator by the same people yet.
Steve
I have tried to reproduce your problem using the JE-8086 VST3 on Cantabile V4335. I have no stutter on my system when I move the mouse over the GUI. Even if I move the sliders or the knobs, no problems.
The time load is relatively high (around 75%, peaking at almost 100 % when I move the knobs) but the audio is ok.
I have tested it on a laptop: Thinkpad X1 Carbon Gen 10
CPU: 12th Gen Intel(R) Core™ i7-1255U, 1700 Mhz
I am on Windows 11.
First, you could try version 4335 of Cantabile and test if the problem is still there. This could be of help to understand if the problem is actually related to Cantabile.
I tested the excellent JE-8086 on my Windows 11 PC (a Samsung Galaxy Book with an i5-1335U processor). The only adjustment I made was to set it to the highest power plan (this isn’t my main music-PC).
The JE-8086 is a true CPU hog. The average TL value is 80%, but it spikes above 100% when switching presets or changing values, as Gabriel said.
However, I didn’t experience any audio issues related to the high CPU, even when using the GUI intensively.
By comparison, u-he Repro-1 barely reaches 40%, and is considered a very heavy VSTi.
To better understand your problem, could you please tell us a little more about your PC?
can I ask you to try with a reduced windows size for the plugin? I have tested different sizes on my PC and I found that I can reproduce your problem, but only if I select 250% or 300% GUI size (by right clicking on the plugin window).
Gabriel
Edit: I got the idea after looking at your video. It seems that you are using a pretty large window size.
OK! Good news. When I dropped the GUI scale to 50% ( it was only at 100%…??) The stuttering stopped. I can’t read the text at that setting, so I’m going to mess with it see how far I can take it before that stutter returns. This is also back on V4357.