One of the defining qualities of Tyler Perry’s movies — it’s what keeps you watching but also what can make them, on occasion, seem borderline loopy — is the wild mix of tones, sort of like mood swings. Perry’s films can lurch from romance to madcap Madea comedy to skeletons-in-the-closet family drama and back…all in the space of 20 minutes. Recent years have seen him growing as a filmmaker (the complex historical fable “A Jazzman’s Blues,” the wartime drama “The Six Triple Eight”), but “Tyler Perry’s Finding Joy” is a throwback, and not in a good way. It’s Perry’s version of a holiday movie and a connect-the-dots love story, but it’s cliché-driven in such a minimal way that it almost makes you yearn for the Perry movies that can feel like a long night of channel surfing all rolled into

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