Houses/Lots Disappear

Memory boost is on and has been since EA told us we could. And yes, I have tried to play it since. The only way to get the lots back seems to be to replace them one by one. I haven't done it  and saved it as I didn't want to lose that save. I would prefer to not replace them by themselves, but I can IF I knew they would stay. As it is, I am not sure they will. 
I thought of saving it as another save and doing it, but haven't really had the time. Every time I think about  it, we have another update and I spend my time trying to update mods. By the time I  get back to where I was, it takes me a bit to get back into game play and about the time I think of it, another update. But I do load it after each update, hoping whatever they are doing to fix alot of issues with the game somehow fixed my neighborhood.  But it hasn't and I haven't played it since it started. I have gone into it and uploaded/saved my sims to put into another play. 

Rereading your post, I almost missed the display issue. I have this neighborhood was created with a Dell laptop, then tried it on a new laptop I bought in Sept. (that is what I was using when I took the picture) and on my desktop computer, as I copied all of my saves, tray files, and mods to be able to play them on the desktop. I had this problems with all three computers.

The first laptop ran Windows 10 and so does the desktop. The new laptop is running Windows 11. So I think this rules out a display problem.

Thank you with any help with this.