The hacks themselves are mostly the work of HCl. I think hip63 just put them together in a convenient packages (which is clearly handy for some people).
Haven't had flickering video, from what I can recall, and the artefacts you're seeing are due to texel alignment. For nVidia drivers, set texel alignment to 7 and in ATi's Catalyst, select 'Alternate texture alignment' under compatibility options.
...at least that's what used to work in times past - not sure where the equivalent options are in today's driver settings, maybe someone else can help you with this.