System information

PC-Duo Host Guide
84
By default, the Host will try to use kernel-mode screen capture first. If the kernel mode
drivers are not present or not working, the Host will automatically switch to user-mode,
and will apply the currently selected screen capture profile (the default profile is "High
Quality/High Bandwidth".)
In general, on XP and older platforms where the user has a choice of screen capture
algorithms, kernel-mode will have better performance characteristics than user-mode,
unless the screen being captured has one or more active elements (e.g. flash or video).
In this case, user-mode will probably deliver better results and should be selected as
preferred algorithm.