If it’s already disabled, you’re in good shape and at least you can make use of the cores.
The issue at the moment is that the API for controlling cores changed some years ago and we’ll have to upgrade some core components to support it. Demand seems to have been low in recent years and I’m not sure if folks are just using CPU affinity less or not.
I did bring up Process Lasso over here as it’s able to remember affinity across program restarts, but I’ve never used it.
How are you planning to break up CPU affinity? I’d like to throw your use case in when I bring it up to the dev team.