Welcome to the worldwide DVDFab family. You may have a conflict with the nvidia driver or some other issue. All GPU settings are controlled by the setting on the AV Codec page, if you are able to select it there it should work with better performance than you are currently seeing. The DVDFab internal log has more information on the relationship between Fab and any installed GPUs, so please take the following steps: In Windows Explorer, please go to \Documents\DVDFab 10\Logs and delete the file dvdfab_internal.log. Then, restart DVDFab, select the Ripper module and load an optical disc in a drive and let it analyze. Select one of the conversion profiles you are trying to use, then press Start and let it run a few minutes. You can then cancel it and follow the steps linked in my sig below to attach the log session you just generated to a post.