Dirt falling only vertically, not sideways

[Wahazar]

Currently there are 2 options for gravity affecting blocks: minecraft style (sand and gravel), which I dislike (low effort dugouts, dirt levitation) and second option with sand, gravel and dirt falling sideways. 

Second option is too harsh, is affecting not only playability, but also multiplayer server performance (I see lot of spikes in fps graph, probably due to constantly triggered ravines). 

Therefore my proposal, to add intermediate option: sand and gravel falls sideways, dirt (soil) only vertically (if not supported) - dirt is more sticky than sand or gravel, so it makes sense. 

[Thorfinn]

Have you looked into Sticky Dirt?