As hotelsinus said:
Please make sure that the “Static Buffer” compatibility option is set in Renoise. We had some problems with other proteus VST plugins which got solved with the option. Please see https://forum.renoise.com/t/important-please-read-before-posting-vst-au-dssi-issues/23317 for more detail about how to set the compatibility options.
If you can not even change the option because the plugin “freezes” Renoise while trying to load it, send me your CachedVSTs.db file please. I will then set the option manually for you. You will find this file next to the Renoise Log file -> Renoise -> Help -> “Show Log file”… Mail it to taktik renoise com