How do I switch CUDA off?

[Movies99]

I have a desktop and a laptop computer, both running windows 7. On the laptop I can download a blu ray as a Full Disc in a short time and DVDFab does not use CUDA to do the shrink. On the desktop, again using version 9, it uses CUDA and either says it will take 22 hours to shrink the disc, or it just gives up and stops the process. I am not too computer savvy but I have seen posts concerning slow downloads and I believe one of the solutions was to disconnect CUDA (whatever that is?). How do I disconnect CUDA such that the program does not use it?

[90312]

Go into common settings, and check the highlighted box:

[Movies99]

Thanks for your help.

[90312]

You bet and I hope it speeds things up for you.

[Movies99]

Did the change and it has tripled the speed. Way to go