I am rendering a series of pngs. Each png results in about a 3 MB file. There’s about 100 of them to do. I cleared out about 5 GB on my hard drive, way more than enough space. Every 20 or so images I run out of disk space, I clear out a couple Gigs and start rendering again, then the same thing happens. What is going on?, is there a massive temp/page file somewhere?
It looks like you have bvh caching turned on. In the render tab go down to performance and uncheck “Cache BVH”. This will stop blender writing the cache to disk every time you render.