Beats me. My model was created from 287 X ~27MB RAW files. That said, I don’t guess the problem for either of us is the RAM. I’ve processed way more photos than this before and have not had the same issue. On the other hand, I understand people often process large models with 8GB or 16GB of RAM without any issue, as well. I’m not sure why the developers have never given a really good response on this (or maybe they have and I just haven’t seen it, though I have scoured the web). All I have seen anyone recommend is to adjust the reconstruction region and try again, but it would be good to know why that fixes the issue, as we could tailor our workflows accordingly and not have to re-process models multiple times to get a good result.