Samsung cdrw/dvd sm-352f

When i’m copying a dvd for back-up with dvd decrypter is slow as hell, and the dvd disk don’t even spin fast. Basically what im asking is how can increase the dvd read speed so i can copy on the fly. Is there some kind of dvd read speed patch for my drive? And why dosn’t the disk spin fast so it can read data faster because copying on the fly with it’s not reading it fast enough and takes forever. Thanks in advance for any help.