It had the makings of an even more dominant, all-around performance than the Miami Dolphins had their last time out. But after jumping out to a 30-0 halftime lead against the Houston Texans, left tackle Terron Armstead’s early departure due to a pectoral injury put a damper on Miami’s efforts. Nonetheless, the Dolphins came away with a 30-15 win over Houston on Sunday at Hard Rock Stadium, which followed the team’s 39-17 victory against the Cleveland Browns two weeks earlier on the other side of the bye week. Miami, which retook the AFC East lead due to its tiebreaker over the Buffalo Bills, won its fifth consecutive game and has its first 8-3 start since 2001 before the schedule gets tough again in December.