Same, these little tweaks are so important, other voxel engines seem to drop the ball on this more than they should, i.e. Minecraft and Space Engineers. SE runs well actually, on default and even high(with good machine), as long as one does not crank all the things to ultra, especially since you can also set in-game block limits super high, even unlimited on some, on top of that. Bwahahaha, careful! They do have warnings, but gamers like to crank settings to find those limits, and oh boy are they gonna if they do. Maxing out 32 GB of mobo RAM is lol what. You'd need a high end workstation/server to handle it, and I bet one could still break even that. It broke my rig more than high detail level engineering model assemblies(think full robot where each screw has spiral threading), and that's saying a lot.
You guys are def ahead of the game in this department with your engine, it really is a big deal. Again, kudos.