The bad news is that the shulker textures in the ACME Resource Pack for Minecraft 1.11 and 1.12 were the wrong size in addition to 64x. The good news is they’re all fixed and the downloads are live right now. My apologies for any undue crashes… I can’t be certain why these versions tested well with my hardware. Minecraft has no sense of scale, so it’s possible to mix resolutions and get away with it in some cases.
I mean, weird, right?
You’re looking for the version numbers as listed below, and the changelog is the same for all versions of the texture pack. Thank you.
ACME Pack 128x and 256x v13.07 to v13.23 for Minecraft 1.11.x
ACME Pack 128x and 256x v13.98 to v14.13 for Minecraft 1.12.x