terrible CPU performance on Nuendo 5.5.6

Yes I did. I’ve went throught all these folders https://www.steinberg.net/en/support/knowledgebase_new/show_details/kb_show/mac-os-x-how-do-i-uninstall-an-application-completely and couple of additional ones I could find. Deleted everything before installing new version. I’m not sure these instructions include everything though.