You can (politely) remind someone when it's their action, but that is technically the dealer's job.
Also, just realize that this is a part of live poker. Live poker in many ways is FAR softer than
online poker, and one reason is that it is a mostly recreational pursuit which for many involves a relaxing, casual escape from the other parts of their lives.
They are not going to play as fast as you want. They will be annoying. They will talk, they will waste time, and they will ogle the ****tail waitresses.
These are all elements of live poker. It's a tradeoff for being the softest form of poker that exists. Decide for yourself if you care to make that trade.