How do I change the drag and drop threshold in Linux? (I'm using Gnome 3)

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http://unix.stackexchange.com – I'm not sure if it's a gnome setting or something deeper into the Linux OS, but I'd like to change the drag and drop threshold. It happens too often on my clickable touchpad that I try clicking and it highlights text instead because I barely moved and it thinks I'm trying to drag. I need a threshold of like 5 pixels instead of what currently seems like 1 pixel. Where can I configure this behavior? (HowTos)