Hi and welcome to Arturia forums.
Yes it's single core performance to run a single application, and for some applications not in the most demanding way.
A CPU like yours can perhaps do a little, depending on what you wan't and need to do. But it's not a CPU that can do much audio production.
Even a 2.5 GHZ CPU can in some demanding cases fall short.
A place to start to get some understanding might be here:
https://support.image-line.com/action/knowledgebase?ans=214The informations in the article is quite generel, no matter which DAW and other audio applications you use.