I have two sites running X and recently both are intermittently running very slowly, so slow that it takes minutes for any change/save. I'm sure both sites could use some work on image sizes, etc... but this problem is larger than that - I'm unable to work on the sites at times. My host (Go Daddy) wondered if it's because I have two site builder plugins activated. Could that be a problem? I built these sites before you introduced Cornerstone.
If not, do you have any suggestions?