The water around ABC's Fresh Off the Boat is starting to get rough.

The network has been double pumping episodes of the sitcom. But the dropoff from its premiere last Wednesday to its regular timeslot on Tuesday was pretty severe.

It's 8 p.m. installment notched a 1.7 rating. That's down 32 per cent from the first week. The 8:30 p.m. second course actually gained marginally in the ratings – to a 1.8 rating – although the total number of viewers dropped down. (Ratings measure the 18-49 year-old audience.)

In first week of the show, which centers on a Chinese family in Orlando in 1995,  the ratings had dropped from the first episode to the second.

Some audience erosion is customary after a show's premiere, which makes Empire's continued growth all the more impressive.

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