At this point I tried to skatter them into the Trunks and branches that I had already made but Sketchup couldn’t hold it any more and skatter didn’t produce anything overnight.
So I turned the leaves, small branches and bigger branches into proxies:
I thought that if I had all these assets produced I might as well use them all, as these trees I’m making are very random. So I skattered the proxies on the Trunk and Branches and I removed the skatter as render only so I could insert the proxy boxes into the tree components:
Forgot about how I made the trunks. It was a free app called Tree It. Takes a while getting used to it but then it’s capable and actually fun. Save as a preset and randomize. Tree leafs are not that great and hence Skatter.
I don’t think it was Skatter that didn’t compute. It computes fine when it’s only proxies or if it’s render only. It’s actually an instant. The problem was, I believe, related with generating geometry for the components with all leafs and branches, so it was a Sketchup issue.