Does someone have a link to a compiled version of the "killer groestl" release? I don't know the first thing about compiling from github...

Yep, I have a compiled version for compute 3.0, 3.5 and 5.0:
https://bitcointalk.org/index.php?topic=167229.msg7299983#msg7299983(Compute 2.0 isn't possible anymore, compute 3.5 & 5.0 are merged into one exe ^^" ccminer35-50.exe, this gets confusing)