Hi everyone. I'd like to thank everyone for trying to figure this out. I just wanted to let you know what has taken place. Yesterday, I used a program called CCleaner that was recommended to me and it cleaned over 1400 files off my computer. My son spent the afternoon with me today and he was in touch with an online gaming friend (and computer guru) from across the big pond and the two of them put their heads together. They came up with two things. My game monitor settings were set for a much lower resolution than the computer monitor default calls for. So he changed that. I always thought I had a pretty good image particularly all the town and background things, except I always thought the characters themselves were pixely. After changing the monitor settings in the game there is a substantial difference with both. Wow even.
The second thing was to run a program called MalwareByte. I have no idea what that is, but it looked at everything on the computer (all drives) and cleared out just over 200 'infected objects' and the vast majority of them were from the registry called 'registry key', I don't know whats. ;-) So I believe my registry was really out of whack and I'm hoping the problem is solved. So with that:
Prior to this cleaning - I opened a large game file last night and had seen the clock starting to become sporadic which is the signal for failure, and I thought I would lose it. But, tonight after the cleaning, I've been playing that town for a couple hours now and the clock is running fine, the speeds are fine and the characters are doing as they should be doing. Looks good so far. We did try to put an old save back in, but the problem was there, so I took it out. I was only able to salvage 4 town scenarios. So I have quite a bit of rebuilding to do. However, I did save every household, house and community lot that I've developed/built into the library and they seem fine when I put them into a new town. So really, it's just placement and relationships I have to rebuild. Thank goodness for small mercies.
I will report back in a couple days if all is well. Or not!