I'm having a similar situation, as well. My tree is really big (almost 70k people), but I want to make a poster only with my son's ancestors, "just" 700 people. The kind of circular tree FTM has is perfect, but it crashes and / or gives an error message if you go over 13 generations, and I have like 30. Charting Companion (a FTM plug-in that is not cheap, around 50 USD), can go so far as 200 generations, but they don't have that kind of circular tree, the one they have modifies font size the further you go, so over 13-14 generations it gets smaller. Other kind of designs would make a veeeeery long poster and that's not what I need. I need a square poster, no matter the size. Any suggestions?