https://bugs.freedesktop.org/show_bug.cgi?id=62087

          Priority: medium
            Bug ID: 62087
          Assignee: libreoffice-bugs@lists.freedesktop.org
           Summary: Performance:Very slow scrolling.
          Severity: normal
    Classification: Unclassified
                OS: Windows (All)
          Reporter: abhipu...@gmail.com
          Hardware: All
            Status: UNCONFIRMED
           Version: 4.0.0.3 release
         Component: Spreadsheet
           Product: LibreOffice

File is created in Excel. File size about 50 MB with about 30 sheets, about
10,000 rows per sheet.

The scrolling with arrow keys is extremly slow.

This causes execution macros that involve scrolling very slow.

This is how I have recorded the macro -
1) Select some rows (about 10-15).
2) Copy
3) Paste Special->Transpose in another cell.
4) Scroll to the first row of the next set of rows to be transposed.

The file is shared on google drive -
https://docs.google.com/file/d/0B8qaXt5L1EUXOFJmMXdoSS0xdWs/edit?usp=sharing

There is another bug opened for the same file for load/save (takes almost > 5
minutes) - bug id 61837 - FILESAVE: perf:Calc takes long time to load and save
file about 50 MB in size
 OS is Windows 7 64 bit i3 quad processsor with 3 GB RAM.

Strange observation - The scrolling speed improves drastically when the laptop
is on AC power.

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