Take note from Sketch, where you can actually set a specific size of the grid and grid elements. In XD I have to do all kinds of mathematics just to get what I want out of the grid, and then it turns out it's responsible and IT CAN'T BE CHANGED! When I want to change the size of the artboard the Grid moves along and changes instead of staying in place with same parameters.

Why it still isn't fixed? Stop adding all kinds of fancy animations that don't matter in real life and please fix the basics!!