I am experiencing an issues with the excel files saved using the aspose.cells. When the file size exceeds 4 MB then i am experiencing some slowness in opening the file. But when i save this file by using excel’s save as option using a different name and reopens it, it doesn’t take that much time to open.
Please try our latest version/fix of Aspose.Cells for .NET:
(please pick any fix/version for your underlying targeted .NET framework version)
If you still find the issue, we need a simple console application (runnable), so please create one such project with v16.11.5 (you may also zip it prior attaching here) to reproduce the issue on our end. Please also attach your template file (if any) and output file (by Aspose.Cells APIs) which is taking more time while opening the file into MS Excel manually, we will check it soon.