Fixed bedrock not showing up (it was being overwritten by stone layers)
Fixed a few issues with the parallax layer (again)
Significant SCP performance improvements! Tests went from 20/s to at or higher than 40 chunks per second just flying around in studio worlds (on the overworld dim). This is a parallax optimization
Simplified how Iris places objects, there should be no visual difference, but any errors should be easier to fix, and it should be faster.