Runs like snails on my pc

All my other sims are smooth as butter but RRE stutters and lags.
Turned v sync off and it only slightly fixed the problem.
The menus lag also and the tracks take weeks to load.
Yes I'm in a grumpy ,downy mood.
Was going to splash out on the premium pack but alas the sim is like a slide show.

May buy a swiss ball instead.