13" Macbook Pro Retina 2015 laggy on 4k

Discussion in 'MacBook Pro' started by prestn, May 21, 2017.

  1. prestn macrumors newbie

    May 21, 2017
    I recently got a 2015 13" Macbook Pro with basic spec (8GB RAM, 128GB SSD, 2.7 GHz i5). Yesterday I hooked it up to my 4k display via Displayport (60hz seems to be working).

    It doesn't run smooth at all. I can understand that 4k Youtube is a problem due to the missing h265 decoding function of the processor, but even the UI lags really bad (scrolling, animations when you minimize windows, open the mission control etc.)

    I'm using MacOS 10.12.5 and already cleared the NVRAM stuff. Is there a solution or is the device really unable to cope with 4k?
  2. Samuelsan2001 macrumors 604

    Oct 24, 2013
    Check the specs on your cable or adapter that can often be an issue.
  3. muharremoglu macrumors newbie

    Jan 19, 2017
    Have the same MacBook Pro 13 inch and same issues which you mention. I test the same 4K Monitor Setup with a MacBook Pro 15 Inch (Late 2013) and the issues are gone.
  4. satinsilverem2 macrumors 6502a


    Nov 12, 2013
    Richmond, VA
    Probably due to the not so powerful integrated graphics in the 13 inch models.

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