My game is unplayable. I tried moving and storing the track, but that didn't work...

I know there are several topics about this, but I've tried everything recommended in those topics and my game is slow enough to be literally unplayable! When I accidentally or intentionally select more than one building or feature to move, it just sits there seemingly frozen for several minutes at a time during which I can do nothing, as many of you already know.

The thing is, I heard that moving around the Injury track helped with this. It made no difference in my game. I moved the track pieces around to no avail. I stored them, also to no avail. Is there anything left I can try?? My Springfield is and always has been large, and there was significant lag when moving stuff even before the update - just not to this degree.

Thanks all!