I might have found a workaround for myself recently, I had not seen corruption after I changed Windows "Allow hybrid sleep" from default On to Off. This evening I flipped that setting back and installed .4243.
Bad news: already twice with this driver I have seen entire 1920x1200 screen flicker, which is resolved by unplugging/re-plugging the HDMI cable. So it seems bad like the 4156 & 4170 drivers. I prefer the 4206 or 4222 drivers which had far less frequent flickering (just in the bottom 10% or so of my screen). 64-bit Windows 8.1, NUC5i5, secondary monitor connected to mini-DP but never powered on.
I also tried what I thought might be previous workaround (set "Allow hybrid sleep" back to Off) with driver 4243 and that ended up with flickering too (various places around the screen - not all over and not just bottom). Now I am downloading 4222 driver zip to figure out how to force re-install that (since it was working way better for me).