[GUI PROBLEM] "Run all plugins in sandboxes" slows down the Renoise GUI

R3.2.2 or old, W10
In Renoise: Preferences / Plugin / Misc there is the following option:

  • Run all plugins in sandboxes (-->separate process)
  1. If this option is activated, all plugins, both 32bit and 64bit will run in a separate window.
  2. If this option is disabled, only 32bit plugins will run in a separate window.

In either case, running a separate window (both AudioPluginServer32.exe and AudioPluginServer64.exe) causes a general slowdown in the Renoise GUI. That is, any 32bit or 64bit window run separately is going to negatively influence the graphics performance of the Renoise window. Why does this happen? Is it a direct Windows 10 problem or is the problem really internal to Renoise?


One very clear way of looking at it is to navigate through the Renoise top bar menus when Renoise are running any AudioPluginServer32.exe or AudioPluginServer64.exe (you must have the plugin window open). You will see that it works as if it were drunk. And furthermore, the problem is cumulative. If you open multiple plugin windows, the Renoise GUI will perform even worse, especially in the drop down menus…

I think this issue is one of the main current problems for Renoise, from that Renoise reached the first version with HiDPI compatibility.

Renoise Team, could you please resolve this matter?

I use this option as a failsafe, because it it prevents any one VST thingie from crashing Renoise. The VST will crash and stop working, but It’ll allow me to save and restart without loosing time/data.

Yes, but this “safe option” should not affect the graphical performance of the main Renoise window, so that we can use this safe option in complete comfort.

For example, it is not possible to use the Renoise top dropdown menu correctly if you have multiple plugin windows open. It’s a notable performance failure!