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video lagging

  1. C

    MPB 13" Early 2015 - 4K @60fps works on Vimeo but not on YouTube (Google Chrome & FireFox)

    Hi, I have an Early 2015 13" MBP Retina and I cannot get 4K @60fps streaming on YouTube within the most up-to-date versions of Google Chrome or FireFox without almost all frames being dropped. The external monitor that I am using is a Dell U2720Q, and the specs for my MBP are attached in the...