Apache OpenOffice (AOO) Bugzilla – Issue 126292
Opening attached Excel file takes 3.5 HOURS!
Last modified: 2015-05-06 10:30:09 UTC
The attached largish Excel file takes just 5 seconds to open in Excel 2007. It's a large file, but completely usable on my machine and I don't notice any problems or slowness with it at all. Yes, I have macros enabled. On the same machine, it takes 3.5 HOURS to open in OpenOffice Calc -- about 2500 times slower. It uses one core of the CPU at nearly 100% during that time. Once it is open, it seems fine and behaves basically equivalently to running it in Excel. I do not know what is special about the file that makes it so slow to open. It is a file created by someone else for people to use for creating characters in Dungeons & Dragons.
I couldn't attach the file, but it is on my DropBox at (https://www.dropbox.com/s/4b9zyziw622j5ir/ForgedAnvil%20D%26D%205E%20Character%20Generator%20v1.41.xlsm?dl=0).
I confirm that import is a very long process. But AOO can't save in xlsm format. So once done, you must save as ODS. This file opens faster.