I have done some serious screencap work in the past. It was a nightmare to get through all the code to get things to work right. And that was with Windows XP, where I felt I had greater control over CPU cycles. Windows 7 has a mind of its own when it comes to CPU priorities. The project I was working on was nearly 9 months long and was a production. That is completely out of my realm as a mechanical engineer on Creo.
Again, the nice thing about Creo's capture is that you can capture one frame at a time as well. Certainly not a high end tool, but still enough to get a 1 hour presentation together in a few days. That is the idea... that I can reliably define and capture design concepts in a reasonable amount of time.
I tried the free Blender and hated it! Not one thing was usable to me. The idea of me working with Creo on my off time is to be better at using it when I am on the clock. I am certainly not interested into code level work. It just doesn't make sense to me. I need to create and save my presentations in a clean logical fashion. No better way to do that than use the integrated tools.
I know there are some really nice high end tools that can blow away anything I have in Creo when it comes to ray traced renderings and animations. I have neither the budget nor the need for this. If it was really easy, and cost effective, more would talk about it. But even with the limitations, people use PhotoLux with some awesome results. I can't even begin to justify the cost nor maintenance for even that basic tool.