Beacuse of preview PPT issue, we have changed the default configuration of file size and increased to 10 Mb in Alfresco 5.1.0. Then we got the error "Failed to load Pdf content" When we preview the .pptx file. The size of pptx file was normally 5-6 MB. When we opened that pptx file the system's cpu utilization was increased to 99% to 100%.
Please let us know, if anyone has better solution to preview heavy PPTs.