Just wanted to mention: couldn't wait any more for this mod, so I went ahead and installed the Linux64 branch.
And... it works beautifully! Thanks to the mod developer, to the people contributing and to all of you guys on this thread, helping people like me, who can't stand to play our favorite game without awesome graphics.
My specs: an aging i5 quad-core, 16 Gigs of RAM, Windows 10 64bit, KSP 1.1.2 installed on SSD.
So far I have seen no performance drop, no square clouds and no weird shadows.
Keep up the good work!