Vector corrects:

Are you using ORBX Vector in your current setup? Have you noticed the difference in river elevations? Let me know in the comments below!

This is the hidden workhorse. It adds accurate coastlines, rivers, lakes, roads, highways, railways, and electricity lines. It literally "vectors" the world’s linear features. Without Vector, coastlines look blocky; with it, they look natural.

: It replaces inaccurate default data with high-quality GIS data. This fixes "square" coastlines and adds missing geographical features like small lakes and accurate road networks.