Epic Games - GTA 5 download speed stuck at 0

I started downloading GTA V on EPIC GAMES. After a while I was getting a constant 0 speed with minor spikes. It's been 4 days and the speed is still stagnant.
What should I do ?

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Navigate to

C:\Users\<username>\AppData\Local\EpicGamesLauncher\Saved\Config\Windows

Edit Engine.ini (might be listed as Engine)

Add the following lines to the end of the file:

[Portal.BuildPatch] 
ChunkDownloads=3 ChunkRetries=20 RetryTime=0.5

Restart the Epic Launcher and restart your download.