Is it just me, or is exploring extremely laggy for everyone else, too? Half of the time when I click the arrows to navigate, nothing happens,and it's generally really laggy. Why is that?

Yeah, explore gets laggy for me as well. Although it's rather sporadic when it does get laggy. In one explore session, I can get through 50 moves in two minutes. Then, in the next, it'll take me, like, 5 minutes. XD