ANSWER:

If their prayers are considered invalid due to the speed in bowing and prostration, so not pray behind them.

Otherwise, pray and then continue to pray in your home after that to win the reward of full night prayer. 

The hanafi imam of our maszid recite super fast in tarawih, i tried praying in another nearest maszid but all are same, all are hanafi here and imam recite super fast. What should i do ? Should i pray tarawih with them or pray at tarawih at home ?