They did correct the jagged lines by returning the display to 100% instead of the 150% I had it on but now the text is so small I have difficulty seeing it. Dell was able to increase the text in the menu items but not in the trays. It’s a challenge to find my groups or components, etc. The font appears to be around 4-6 which my old eyes can’t discern.
Also, with my display at 100% even emails are hard to read.
I’ll try your suggestions on the GL settings. If they work and the lines aren’t jagged I could increase display to the 150%
Thank you for your help.