Limited... In the end he didn't know anything past his 3-Tomoe Sharingan until Itachi's arrival... Oh, btw, there's no stopping Tsukuyomi, Itachi's Tsukuyomi, specifically, as it doesn't work in real time.... He distorts time and stretches 3 days in his world less than 3 seconds, much faster than the body could actually react and the fact that they're restricted in any type of movement if it's in the user's will. And not every Hyuuga is a master of their Byakugan, Neji was a special case, those of the main branch would attain the secret techniques, while every other Hyuuga was left in the dust with a basic knowledge of the Byakugan.