Illustrator :: CS6 JPEG File Saved Looks Distorted When Uploaded Onto Internet

Made a simple type and shape design with a solid backdrop. When I tried to export via save for web to jpeg with high settings, it came up online with subtle but visible alterations. Behind my shapes are speckled like dust, it looks super low quality.

I tried using ps to save instead, I even tried removing the backdrop and remaking a whole new document and just moving select items over, then recoloring..which was not the best attempt but same result.

I'm not exactly sure what her color settings should be to avoid this. Im working at 6500 x 6500 right now. Here's a visual of the up close issue. All over its less quality. And Im saving at top jpeg settings in RGB. I really don't want to tell her she has to begin all over again.