You could try switching them off on a sheet by sheet level by unchecking the little box next to the effect - if you really need some of the effects but not all of them to be able to see what you are doing.

It looks like the low res versions of the fills are being used for some reason. There are 4 resolutions available for every bitmap and symbol. CC3 picks the appropriate resolution for the zoom level and displays that resolution. But there are times when for some reason it doesn't get the right one.

Click the hourglass in the left toolbar and check that you have these settings. "Automatic bitmap quality", "high". Clear the bitmap cache and Apply. If that doesn't improve matters temporarily pick "Fixed bitmap quality" and "Very high". Apply that, and then switch back to the Automatic bitmap quality settings.

If you are still having trouble after switching resolutions and clearing the bitmap cache, hit the Fill style resolutions (advanced) button and check that you have them set up like this:

On map 2 you probably have 2 nodes rather close to each other. Fractal lines can do that sometimes. Try using SIMPLIFY with a distance setting of 0 (zero) or som really small number, like 0.01. That will remove any that are right on top of one another.

I've not used the keyboard command myself, but you get a break down of everything if you pick 'Count All' in the Info menu.

Maybe that is what you did anyway, but there should be a list like this one.

Colours are always tricky.

If you are unsure about the colour of a fill relative to the rest of the map try using sheet effects to lighten/darken or change the hue, and go through a happy hour of hitting the Apply button until you are happy that the existing colour is the best one, or find a better one.