@yall So I think your core problem is you are trying to use the preset system (which has no inherent ordering - they're files in folders) for something its not designed to do - load sample maps in order.
I see what you mean now, it would be very complicated to have a separate license for the samples and the plugin (derivative work of the samples would have to be GPLed) so the commercial license would definitely be the best way to go.
@d-healey it is automatically assigned to the modulation of all my vsts. it is not a problem of hise c is on. I just wonder if there was no way to assign a button that would be the same on all keyboards. I guess the modulatio. a message the same noon on all keyboards right?
Just to let you know, I've started a new project with a more intelligent structure, and the convolution reverb behaves properly, with a very low CPU usage (about 5%). So the issue was definitely the bad structure of the previous project.
Thanks all for your support.