“The Perfect Couple” debuted as the most-watched Netflix series of the Sept. 2-8 viewing window, hitting 20.3 million views in its first four days of streaming. The most-watched title across the entire platform, however, was on the movies chart: thriller pic “Rebel Ridge” debuted with 31.2 million views in just three days. At No. 2 on the TV chart was last week’s top title, “Worst Ex Ever,” which hit 7.2 million views in its first full week of availability, down from 8.4 million the week before. The Jeff Goldblum-led comedy series “Kaos” was No. 3 with 5.9 million views. More to come…