Choppy scrolling

Discussion in 'macOS' started by mat0r, May 24, 2013.

  1. mat0r macrumors newbie

    May 24, 2013
    Dear community,

    Not long ago I bought an new iMac late 2012. Until now I’m pretty happy with it but I realized a problem while working with editors that the scrolling is choppy and laggy.

    The problem:

    When I use applications like eclipse or Dreamweaver the scrolling is totally laggy and it is very frustrating working with that. When I scroll the CPU usage goes up to 20-40 %.

    But there is a difference when I change the size the texteditor window. When is very small the scrolling is very smooth like it supposed to be when is max size is very very choppy.
    I made a small video to demonstrate the issue and added some monitoring. When you play it on 1080p you going to see the values.

    I think that is not ok and intended. I tried it also with other applictions and is kind of the same problem. Using Photoshop , Textwrangler or Word is alaways slow scrolling. Sometimes even dropdown lists are lagging (wtf?).

    So far I tried this approach’s to solve the problem

    • Deleted the application caches in safe mode
    • Create a new user and tried scrolling
    • Renamed systemconfiguration folder and try after restart
    • Smooth scrolling functions and trying around options
    • Reset the PRAM

    Nothing helped at all and as newbie to osx I don’t what to do else.

    I would appreciate some advise
  2. benwiggy macrumors 68020

    Jun 15, 2012
    How much RAM do you have? Is it being maxed out?

    For what it's worth, I have Dreamweaver CS6, and although the source editor is not choppy, when I scroll, the CPU usages goes up to 75% for the DW process.
    It goes down to 1.4 when I stop.
  3. mat0r thread starter macrumors newbie

    May 24, 2013
    I have 8 Gig and is not being max out, not in that case.

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