Regarding WORDSNET-19627, we need more information from your end to be able to investigate this issue further. The created HTML document that we got on our end has only 23KB, rather than 67MB. The test runs/completes on our end in about 9-10 seconds, and the created document is being opened in a browser immediately. Is the drive where you are loading/saving documents a network drive or not? Please also share the Aspose.Words generated 67MB HTML file that is produced on your end for further testing? You can ZIP the HTML file and upload the ZIP file to Dropbox and share the Download link here for testing. Thanks for your cooperation.