External 4k Monitor Windows very Slow

Discussion in 'Installation and Configuration' started by DavideS2, May 18, 2018 at 1:11 AM.

  1. DavideS2

    DavideS2 Bit Poster

    Hi, I have a problem with my external monitor.
    My configuration is:
    macOS High Sierra 10.13.4
    Parallels Desktop 13.3.0 (43321)
    MacBook Pro 13 inch 2017 (3.1GHz i5).
    Using Windows 10 with the MacBook monitor everything works perfectly. Instead, using my Samsung LU28E85KRS external monitor connected via USB C to DP, the system becomes very slow.
    Parallels is currently set up as follows:
    Configuration Game
    CPU 2 Core
    4GB Ram
    1GB video memory.
    Does anyone know how to solve it?
  2. Arun@Parallels

    Arun@Parallels Parallels Support

    Hi @DavideS2 , please let us know how much free space you have on your Mac.
  3. DavideS2

    DavideS2 Bit Poster

    Hi Arun, thank you. I have about 120GB free of 500GB. If I run windows with a FullHD external monitor everything going good.
    Buh with the 4K external monitor Windows run very slowly :-(
  4. DavideS2

    DavideS2 Bit Poster

    I retried to connect a full hd monitor and everything works fine now. So the system becomes very slow only when I use an external 4K monitor.
    How can I do? Please, help me, thank you!

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