My workaround was to not play games until the download finshed. If you need to download Windows 10 during gaming time or consider 4.45 GB as a large download then this can be a real pain. I understand that this is a niche problem. This solution requires that you have technical knowledge and that you restart the download (I wanted to avoid this at all costs). There are solutions from other issues for example downloading the ISO directly.
I have not found any that covers this specific problem. Many sites have solutions to similar issues. The second that you move focus to a different application then the download continues immediately at full speed. If you switch to a game fullscreen or windowed then the download stops completely. Downloading a ISO using Windows Media Creation Tool freezes or stops or pauses while playing games.
