Default [Q] Issues installing Hyperdrive

So I've tried installing Hyperdrive multiple times on my S4 and I'm having issues. I bought the S4 used stock on the MK2 version. I rooted MK2 and then followed surges directions to upgrade to NC5 and retain my root. I currently am rooted running stock NC5 with Safestrap 3.72, and every time that I've created a ROM slot and attempted to install hyperdrive onto the phone, the aroma installer works great, I make sure that the ROM slot is active, and then I reboot. It boots up into the stock rom every time and the rom acts all glitchy and lags horribly. Also, if I plug a USB cable into the phone from the computer at that point, the phone just boot loops. I have followed the directions specifically for installing Hyperdrive to the letter multiple times, with no success. I end up going through surge's directions again to get to stock NC5 and then start all over again. Anyone have any clues what I'm doing wrong?