Sims freezes but time goes on

Hi

I think this is an ongoing issue as I seen posts with same issue from 5 years ago... everything in the household/lot just freezes for hours (game time) and you can only cancel the action, even that the time needs to pass for hours for it to cancel. I was hoping installing the DLC can fix the issue - but no luck.

My assumption is that the current save I have is corrupted. However I dont want to start a new one because I have invested a lot of time on that one save. I do not use any MODs and my Sim is simple - one female with two cats. I notice the issue started to happen after I purchased horse, at the same time I also started to get some improvements from the point shops something like - Never need to shower or never need to sleep. 

Anyone has come up with a solution over the last few years please HELP!!!