I found Fraps to be fairly good, frame rate wise on my old 8 year old single core Development PC but I tried DVDvideosoft today, and the play back was like watching a slide show of photos, very slow indeed.
Of course my development PC is a single core 3.2ghz dog running XP SP3 from a day gone by so its not really a good test of what the proggy may be capable of doing on a more recent CPU.
I prefer to use this old machine for development as its easy to reload the OS when the crap hits the fan from all the proggy downloads that get wipped out after I find they don't work very well.
It scares me to think about having to reload Windows 8, so I keep my other machine isolated from the net.
I did find Fraps makes large raw format files but that is fine as each segment of a movie is only a few seconds long before changing to a different angle to keep the movie interesting to the eye.
