You can't play LoZ: TP in all places at 100% speed with an overclocked Haswell 4670K (a great deal more powerful than the 2700K with OC) in 4.0.2. On the upside, lots and lots of bugs have been fixed that caused graphical glitches. You can come pretty close in most places. In dev versions, LoZ: TP has suffered more than other games due to the removal of the ZTP hack and tev_fixes_new.
If you like 3.5, continue to use 3.5. Nobody is trying to stop you. You won't get support for any issues that come up because many of them have been fixed in latest stable and dev. But the fact that your current hardware, which is ample, won't play at the same speed is neither here nor there. It's well established what kind of hardware is needed to play that game at the fastest speed under stable and dev. So either use 3.5, or upgrade hardware. It's that simple.
If you like 3.5, continue to use 3.5. Nobody is trying to stop you. You won't get support for any issues that come up because many of them have been fixed in latest stable and dev. But the fact that your current hardware, which is ample, won't play at the same speed is neither here nor there. It's well established what kind of hardware is needed to play that game at the fastest speed under stable and dev. So either use 3.5, or upgrade hardware. It's that simple.