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505
Scrolling down is 3x slower than scrolling up on a fully loaded UltraGrid (!)
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Hi, please find attached a very basic demo (built with version 11.2), which illustrates the following point:

  • Scrolling down takes a lot longer (~60 seconds) than scrolling up (~20 seconds) across all 600+ rows on this grid.

Our users are complaining about the slow scrolling performance when scrolling down the grid.

Is there a reason for this inconsistency?

UltragridTest.zip
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  • 71886
    Offline posted

    Hello gsharm3,

    I tried your example, I tested it with your version and also the latest version of Net Advantage controls and do not see such behavior as the described. Yes, the performance is poor but please note that this WinGrid instance has a lot of rows and columns, therefore there are a lot of UIElements. They need to be painted everytime you scroll. I could not see any difference when scrolling up and scrolling down. Please take a look at the attached video file.

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