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@OP
I'll try to be more on-topic here than the majority of this thread... as I did some casual raiding in Hellfire with the Skylake HD530 igp for quite a few weeks, so this experience is first-hand. Resolution was 1680x1050, View distance: "good", Projected textures: "on", MSAA, shadows and sunshafts: "off", other texture settings generally on "fair".
(Without the forced upper fps cap this easily provided 60-100 or even more fps during open world questing, flying etc. but that is not really relevant, just mentioning it as some tech portals' "WoW benchmark" is nothing more than a fraps in a desolated area while flying on a gryphon taxi.)
After experimenting a bit, I used vertical sync in 5-mans and in Hellfire Citadel. There _were_ drops as expected, Socrethar and Archimonde have their issues with raiders _and_ the game engine, and whenever water is around, vsync bugs itself to 30 fps just as in all expacs before, but a suprising number of fights went really smooth. Of course in a raid CPU matters more sometimes, and Skylakes really have the horsepower required. With the patch things got slightly worse, but that was to be expected. The igp still may be a nice temporary solution in Legion, probably not for cutting edge progression and definitely not for visual enthusiasts. Pre-patch the game itself calibrated the recommended settings to 720p + Good/High presets upon detecting this HD530, but with the settings above FullHD should not be a problem.