From my understanding from various people online and my own experiences as someone who uses an Intel Card in my main rig (used to dealing with wonky drivers although it's a lot better these days) Only use DDU if the situation calls for it. Like swapping GPUs. Otherwise just doing a custom install and making sure you check the box for a 'clean' install is good enough. Similar adage to "If it ain't broke, don't fix it." Unless you're getting a lot of crashes or things just seem off performance/visual wise. DDU is probably overkill in most situations.