ANSWER:

If his prayer is too fast to the extent that you are unable to catch up in pillars, you must not pray behind him. You can advise him diplomatically one to one and not in front of others. 

QUESTION: Sheikh i recently moved to US not long ago so during this Ramadan during taraweeh Salah my uncle leads us during Salah but his prayer is very very fast and I can’t keep up with it but I don’t know what to do should I pray my Salah on my own or should I still pray with him as we all pray together I don’t know escuses to give for me not to pray with him

Taraweeh, Tahajjud and Qiyam-ul-Layl |