thats true, but let me tell you, don't use more than 2-3 splats overlapping at the very same spot. Think twice which of those splats you need before you place them. ... with 4 splats on top of each other the lowest one is hardly visible, but it will hit performance badly.
As a tradeoff we're now allowed to use 6-7 tiles per chunk, as opposed to 3 in COH1.
The limit is even higher: 8 per chunk