Download IMGBURN and see how you like it to Nero. Nero's fine, but IMGBURN does things a whole lot better.
If you want to stick with Nero though, just make sure it's not starting up with your PC. That would be a waste. If you press Windows key+R and then type "msconfig" (without quotes) into the run box and hit enter, you can see all the crap that starts up when your PC does and remove the ones you don't use often. You may see a big difference in performance.
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