Opening is slow when there are many documents opened in a session. (Order of opening)

[regs01]

Let's say we have 10 tabs of documents. When we close SumatraPDF it will save the session. At next loading it will load all those 10 tabs again. It will restore them. But it we open a document from File Explorer (i.e. via command line argument), we have to wait while the session is restored and all those 10 or 20 documents will load before it will open the document you want to open right now.

So it needs some kind of change of order. If there is a document(s) coming from command line argument(s) it, or they, should open and be ready to read first. Then it should restore session in the background, while you already working with your document.

So you won't wait 5, 10 or more seconds every time you need to open some document. Well 3.6 prerelease loading significantly faster, but you still have to wait while all session tabs restore before file opens.