Any optimizations are planned for loading entire file to memory?

Hi my company is using Groupdocs viewer, watermark and redaction in server side online viewer and appreciate the viewing quality but the file takes more time as the file size increase. According to this post replies, entire file is loaded into memory. Is there anyway that can be avoided for at least Microsoft office files, or is there any plan to increase the memory efficiency of SDKs?
Post I am referring to is Does viewer work with very large docx files - #4 by usman.aziz

@shiva.k

Could you please share more details on this? Don’t you want Word document to be loaded into memory? And from loading into memory, do you mean memory stream?

Hi, Thanks for the quick response, I would like to know if I want to view first 5 pages of my word document of 10 MB size reside in disk, will the viewer SDK load entire 10MB into memory from the disk? Or only part of file containing 5 pages are loaded from disk?

@shiva.k

Entire document will be loaded.