I dont know if it works with the dvdx program, but most programs can be sped up by changing the priority
Rightclick on your taskbar on a spot where no program things are.
Select taskmanager , and go to the processes tab.
make sure dvdx is running (or another app that you want to speedup) andclick on the CPU block twice.
this will sort the processes by highest cpu usage on top.
CAREFULL, the following will make your system slow, or if set too high even unresponsive untill the program is done !!!!
Rightclick on the DVDx process (or something similair) and select set priority. Set it on above normal for some speedup.
higher will make your computer unresponsive !
If you click on the performance tab, you can get an indication about cpu usage and memusage.
if memory is maxed out, you need more memory to be able to get more cpu usage(and speed)
and be carefull.
After rebooting, or closing the application, this has to be done again.
It does not store the priority info for the application .