I have a large excel file (58 MB). I have try this file from LibreOffice 3.3.x until now, and it has a great improvement. At first try using LO 3.3.x I opened this file with more than 1 hours load time, it is so annoying, so I back to MS Office Excel just to open that large file. Now, with LibreOffice 3.5.x, the load time for that file has show a great improvement in load file, as we now before 3.5.x it can be opened for 1 hours, now it can be opened for less than 10 minutes depend on PC specification. The problem is not just that, it's appear when I saving that file, it can take more than 30 minutes just to save that file. The larger file, the longer times needed. It's not the only large files. There is another files that larger than it, the size is 224 MB. And when I trying to load that file, LibreOffice just crash after a hour loading time. See attached file for example.
sorry, the attachment cannot upload more than 3 MB file, so there is link for the sample file http://easyupload.net/files/get/pNNg5qiM-L/sample.xls
I am getting huge XLS files when saving spreadsheets as XLS with spreadsheets that previously were similar size or slightly smaller in XLS form than in ODS form. Now the XLS file is well over 50 times bigger than the ODS file!!! This is with V 3.5.5.3 on WINDOWS.
This should be already fixed in 3.6 and 3.5.6.
Yes, seems to be fixed in 3.6 and 3.6.1.
Closing this per Comment 3.