https://bugs.documentfoundation.org/show_bug.cgi?id=165595

            Bug ID: 165595
           Summary: LO Calc Version 25.2.1.2 is VERY slow with our
                    spreadsheets
           Product: LibreOffice
           Version: 25.2.1.2 release
          Hardware: All
                OS: Windows (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Calc
          Assignee: [email protected]
          Reporter: [email protected]

Description:
We use our spreadsheets to enter data from ship's logs. The image of the log
page is the background for our Log Page sheet. One of our uses reported that
the new version of Calc was very slow. I also had the new version of LO, and it
was normal. We have several user preferences on the Setup sheet. The log page
image was hard to read, and so I turned on the Image Enhancements option in
cell C25 of the Setup Sheet. LO immediately slowed to a crawl, to the extent
that entering a sequence like 30.12 would take several seconds for the digits
to appear.

I turned off Image Enhancements, but the problem remained. I closed and
reopened the spreadsheet, but the problem remained. I rebooted my PC and the
problem remained.

I alerted all our users not to update LO and I advised them to check and turn
off the Automatic Update option.

This is my system:

Version: 25.2.1.2 (X86_64) / LibreOffice Community
Build ID: d3abf4aee5fd705e4a92bba33a32f40bc4e56f49
CPU threads: 4; OS: Windows 11 X86_64 (10.0 build 22000); UI render:
Skia/Raster; VCL: win
Locale: en-CA (en_CA); UI: en-US
Calc: CL threaded

Steps to Reproduce:
1. Open the spreadsheet
2. Enter some data on the Log Page sheet
3. Turn on Image Enhancement on the Setup sheet
4. Enter some date on the Log Page sheet again.

Actual Results:
1. With Image Enhancement off, the spreadsheet works normally
2. When Image Enhancement is turned on, the spreadsheet is very slow.

Expected Results:
The spreadsheet would work at a normal speed irrespective of the state of the
Image Enhancement option.


Reproducible: Always


User Profile Reset: No

Additional Info:
Version: 25.2.1.2 (X86_64) / LibreOffice Community
Build ID: d3abf4aee5fd705e4a92bba33a32f40bc4e56f49
CPU threads: 4; OS: Windows 11 X86_64 (10.0 build 22000); UI render:
Skia/Raster; VCL: win
Locale: en-CA (en_CA); UI: en-US
Calc: CL threaded

I tried the spreadsheet after Start in Safe mode. It was OK, but we need our
macros to work, so it is not an option.

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