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  1. #11
    Join Date
    Oct 2007
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    Madison, WI
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    We received a 4K monitor for testing, but haven't been able to duplicate the issue so far. Our Mac developer is running 10.11 on his primary system due to limitations of a development tool he uses. It's possible the performance issue only happens in 10.12 and 10.13 so we'll have to do further testing.
    Chris K Scooter Software

  2. #12
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    Oct 2007
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    Madison, WI
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    callion82,

    You said your Mac Pro 2013 has a 4K and 1080p monitor (vertical). Is the performance issue better if you move BC's window to the 1080p monitor instead of the 4K monitor, or do both displays have equally bad performance for BC?
    Chris K Scooter Software

  3. #13
    Join Date
    Oct 2007
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    Madison, WI
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    We've now tested with two systems, using a 4K and a 1080p display, on High Sierra and Mountain Lion, and the performance looks fine. It's a little more sluggish than I'd like, but that's not new, and it doesn't appear to have gotten worse recently. Part of it is that macOS isn't the lead platform, so there are some inefficiencies compared to the Windows version or a macOS-only app, and part of it is that we're using some outdated technologies. We're working on replacing those, but it's a big project and it's going to take significant time to complete.

    Were you using BC previously on the same computer without the slowdown?

    We are interested in hearing from anyone who's experiencing this to see how widespread it is. One person sent us a YouTube video showing the problem, and any sort of screen captured video like that would be very useful.
    ZoŽ P Scooter Software

  4. #14
    Join Date
    May 2016
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    3

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    Sadly, I can confirm the issue. BC4 is deadly slow (unusable) in the window comparing folders trees.

    As other users, I have a multimonitors (4) with 4K:
    - internal MBP TB 15 2016
    - 1 4K
    - 1 FHD
    - 1 HD

    Not sure, but it looks like this is related to 4.2.4.

    The issue is mainly when using BC4 on the external 4k display, when moving the window on the MBP screen. Things are getting better.

    How can I revert back to 4.2.3 ?

    Thanks,

  5. #15
    Join Date
    Oct 2007
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    Madison, WI
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    Hello,

    Email us at support@scootersoftware.com along with a link back to this forum thread explaining your issue. We can troubleshoot further and also send you an older release.
    Aaron P Scooter Software

  6. #16
    Join Date
    Jan 2011
    Posts
    14

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    I find window scrolling to be painfully slow (especially in text comparison windows.) I've been using Beyond Compare on the Mac since it came out (and on Windows for years before that) and only recently came to feel that scrolling is no longer a zippy as it used to be.

  7. #17
    Join Date
    Jan 2011
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    and inline editing of text files is not excruciatingly slow. I'm running BC4 Version 4.2.4 (build 22795) on macOS Sierra 10.12.6 (16G1314)

  8. #18
    Join Date
    Oct 2007
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    Madison, WI
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    Thanks for the report. We have had a couple in this thread, but haven't narrowed down the exact causes yet. What hardware configuration are you running? What resolution are you running at; if you decrease it do you see a performance increase?
    Aaron P Scooter Software

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