Optimization with media files

After doing some search I realize you guys said it’s not optimized for it, I tried changing app.yml to raise limit, max I can do is 100MB, is it also a cf issue? Or mostly nginx related? I’d love if it was optimized for it, yes I know you can upload to a host but still (pardon my ignorance if it’s literally impossible with how the discourse is made)

When uploading multiple files, why does it “upload” then tells you that a few didn’t upload? Can the 20 files limit be increased?