Solved Section background image size

Hi All, I am new to divi and am creating my site based on the "Fitness Gym" pre-made layout home page.
URL: https://rvsconline.live-website.com

The top section has a background image and this is included in the image library at a 1920x667 image size. When I check the background content info the image fits well using all Cover/Fit and Actual size settings.

When I add a different image sized to 1920x667 it shows as a blurred image for "Cover", a small image for "Fit" and very small for "Actual Size".

If I change the image back again using the library version of the original image I get the same result.

I created a second section using the library image and get the same blurred image. I get a sharp image by using copy and paste of the original image.

I have searched extensively and can't see what I am doing wrong and need help.

Thanking you in anticipation, Steve

 

Ha Ha, simple as that and I just got a trophy for asking my first question.
Brilliant many thanks. I'll be back!

Steve