FP2 stock android?

I suspect the Fairphone Android Layer is slowing down my FP2. I would like to try Stock Android to see if that helps, but it is not available within the Updater. Is it hidden somewhere that I haven’t detected yet?

Stock Android is not available (yet). Why do you suspect FP OS?

I want to try to have as little software/services running on the FP2 as possible as it shows a really slow user experience. I believe using Stock Android can help me with that. Doing a hard reset or reverting to an old (Fairphone) OS did not do the trick.