How to download the unreal engine with slow internet?

I have really slow internet and when i try to download the unreal engine it will download only about 8% at most and then the percentage will actually start going backwards. I’ve looked for a way to fix this for hours but I couldn’t find anything. What could I do to fix this?

How can the % go backwards? I fear it’s the only way to install the engine unfortunately. Or ask someone to download the editor source from github, build it and put it on a usb stick for you.