@Blezio2: jakość pobierania to kolejny exclusive ( ͡°͜ʖ͡°). Są jakieś tam sposoby na przyspieszenie pobierania od nich. Edycja plików, zabawa z firewallem i takie tam ale kij wie ile to warte.
Locate C:\Users\You\AppData\Local\EpicGamesLauncher\Saved\Config\Windows (or whatever it looks like for you, you might need to the hidden folders like AppData if it isn't there)
Open the Engine.ini file (it will only be here if you've downloaded and opened the launcher at least once before)
It should be empty, and either way, paste in (as the only text in the file):