Vishal567 well as far as I know mega doesn’t allow downloading large files from browser (atleast in chrome as I have seen) you have to download their app to download large files. It asks me to download from mega app for files bigger than 300mb. You can try using the mega app with vpn to download files bigger than 5gb when you hit transfer quota pause it change location on vpn and continue. That what I know which works for me.