Cool. Didn’t know about vultr.
While last night I just thought of it through my sleep… idea pop up!
Test it out and it’s working!
Instead of use whole project for source control, pick single folder that we need focus on like art stuff. Git that!
Upload zipped up project on onedrive and on my teammate side, delete art stuff and clone it in using source tree.
With source tree it allwork smooth! With 590 mb useage instead of 4.5gb and hey, it’s free 
Haven’t try out source control within unreal engine yet. We are working on project at moment and will find out tomorrow once we got something add on.