Cod Warzone Problems

I’ve just build a gaming PC and when trying to download cod warzone the download speed is really slow and I have changed the speed limits to 0. Also, when the download gets to around 100gb remaining the PC does a hard shutdown and I’ve done through all the troubleshooting for that and im convinced its the game and then when the PC is turned back on the game can not continue downloading so i have to uninstall the game and restart the download! this is the third time ive attempted it now and i have no idea what to do.