Thanks for giving it a shot! It is totally playable at 64 resolution, but I will definitely add version with fixed lightmaps as postjam version. Maybe in a windows build.
I'm sure its playable when the lighting works, maybe I was just out of luck there. Definitely works better on higher res though :)
I have added windows build with fixed lightmaps. As it is post submission date it can not compete, but it is much easier to see things and navigate.