I haven't played with my FSX for ages, however, I don't know how many of you are aware of one of the most excellent websites to offer American content for free as BlueSkyScenery. I installed nearly all of their content, many, many, GB's of data that covered the ground textures of several States particularly the West of the country, such as California, Washington, Oregon and down to Utah, Nevada, Colorado and Arizona, etc. I'll put the URL up for you to have a look at, I can thoroughly recommend the site, I even donated a bit of money to them a few years ago in recognition of the amount of freely available content they have, it's incredible, and certainly worth a look at. For those with good graphics cards it'll be right up your street, BUT, there are a lot of 'squares' to download for each area, so, ensure you have a lot of storage space available if you get carried away downloading everything.....
http://www.blueskyscenery.com/Cheerz. ex-railwayman.

i7 10700k 3.8GHz Eight Core CPU, Gigabyte Z590 AORUS ELITE AX, 32GB RAM, nVidia RTX3060ti 8GB, WIN10 PRO 64-bit. 10TB HDDs in total.