Good lunchtime or good evening depending on when you read my question 😃, I've downloaded the first person shooter game Call of Duty Cold War since 2:00 p.m. And it is still being updated so far.
Is there any way to increase the download speed?
The download speed primarily depends on your internet contract. And you can't just change it by the hour.
So no, the game has well over 150GB of data, which takes a few hours with most lines in Germany. Falls within the range of "probably perfectly normal and right".
From the estimated download time, I would guess a connection with about 50Mbit. A good 6 1/2 hours of download can be expected for the under optimal conditions. And I don't think the speed is consistently top.