The only remedy I have left to try, other than getting a bigger, better, faster CPU, is to upgrade to Windows 10. Since the sliding palette is the only issue I have not resolved, I will dock the palette permanently. The only bummer is losing 3 1/2 inches of screen.
I know I can make the artifacts disappear by refreshing the screen or various mouse moves but I use the palettes a lot and switch between them, so I am not inclined to add another keystroke to the operation.
I looked at upgrading to Windows 10 but decided not to at this time. I went back to 2016PP on this machine and it really has a very jerky action, even on a new drawing. If I pull the palette a good way out onto the screen, there is a definite jerky motion as the palette retracts.
I think they wanted to create a cool looking effect to impress users. Other menus and windows in Turbocad do not have this type of action when deploying or closing. It seems to me the palette should just disappear when it times out, instead of sliding away.
I was at 8GB of RAM when I built my machine. I had not problem but recently added another 8GB, just to be sure.
The video card or software could always be a problem. I may see if there is a new driver for it. I really had not thought of the video card driver.
When I installed 2018PP, upgrading from 2016PP, it worked great. I only had a problem bringing my 2016PP file into 2018PP.
1. I defragged the HDD, no detectable change but it was a good thing to do, of course.
2. Although I had Chrome open when I was taking the screenshot, I normally have only TC running. I usually have a laptop alongside which I use any internet or files I need to look at.
3. I usually don't run the internet and made sure all apps were closed when troubleshooting this problem.
4. I have Norton Antivirus and it can be a problem. Turning it off was the first thing I tried. It made no difference.
I tried the Copy/to Blank file method and that worked.
At this point, everything seems to be working okay, except for the auto-hide palette operation. Since I can see this in both my desktop computer, I suspect it is a flaw in the program, perhaps relating to older operating systems, video cards, or drivers.
I really appreciate all your assistance with this problem!