Infinite is rendering from bottom up. The calculation of the remaining time is always based on the last scanline that was proceeded (or the last couple of...). Normally at the top of an image there is sky so you can have the hope that it becomes much faster than expected later. In Vue 4 it was vice versa - 4 rendered from top to bottom and therefore the remaining time vecame longer and longer because it comes to the more difficult parts of the image later. When you think about, there are not many ways to estimate the remaining time really. Especially when you don't want to use a lot of processor time for this and therefore don't want to make difficult calculations. I remember times of Bryce when there was no information about remaining time. I had once an image that rendered three weeks! I waited and waited. And waited and waited.

One day your ship comes in - but you're at the airport.