Upon rendering a contraption (either by creating one or entering a world with it) the game crashes, effectively making one of the flagship features of the mod unusable. I tried first with shaders, then without shaders, after that without Optifine, and lastly only Create and its dependency. On its own Create works as intended, but with the mods in the modpack, it does not.
Crash report: https://pastebin.com/YWvDEYUq

Try without starlight installed

Yup, it's starlight. Thanks.