My PC is just slightly under spec based on Roon published platform requirements. It runs fiine most of the time. But the cpu does get pegged from time to time so I am certain an upgrade on my pc running the core would make things run faster and more consistency. As it stands it’s fast and reliable enough. Sometimes access to qobuz lags a bit retrieving metadata but that’s not necessarily Roons fault.
Also there are always apps and services running on Windows that are not needed for Roon alone so shutting those down always helps if needed.
linux is surely a much lighter weight ps for running Roon efficiently but it’s nice that it core runs on windows or Apple ie the computers many people already have.