For CC3+, there will not be much of a difference between those two. A lot of operations in CC3+ are single threaded, in which those two score pretty much the same (but about 50% better than your old one).

Some processes, like some effects do take advantage of multiple cores, but it is unlikely to fully saturate your CPU, so even if the 7700 is better, I doubt you would observe much difference between them. But the 7700 do have two extra cores that can work on other things the same time as CC3+ works though, which can be an advantage.

As it quite obvious, I am way behind in adding these to the atlas. Sorry for that, but I have had and still do have other things taking up my time as well.

But, I did manage to at least process the winning maps today (Except Lorelei, which need an intermediate map before I can add hers), and I assigned the badges to the winners.

This happens if the fill style doesn't have a specified scale in the fill style dialog.

Just open the Fill style dialog (FS: in top right), go to the bitmap files tab, find your fill in the dropdown, enable the scaled checkbox and provide appropriate values for the scale. Some experimentation may be needed.

Once a fill is scaled, it should always fill the same area no matter the zoom or export level.

Great looking map.

Do note that while the image size in posts are limited, you can upload much larger images in your gallery if you want to show off a high-res version.

I am not sure what you mean by "terrain" in this context, but there is no way to embed images into a drawing, none of the official ProFantasy art is embedded either.

What is normally done is to either store external images in a subfolder in your CC3+ data directory, because you can then refer to it in the map using the relative @-indicator in the path. For your own custom artwork/images, you can also store it in the same directory as the map itself, and then use the map-relative identifier ($) in the image path to refer to these resources, that way, you can keep everything in the same folder and it will continue to work no matter how much you move it around, as long as you always move the entire folder with map and artwork together.