Hi,
Do you mean upgrade to Windows 10 version 2004 from Windows 7 or Windows 8, or update to Windows 10 version 2004 from Windows 10 1909 or others version build?
What's the previous system version before upgrade or update to Windows 10?
What's the game name? Does the issue occur on other applications?
Try to right click game and choose properties\compatibility to run it in compatibility mode if it has to check if it runs well.
I would also recommend to check if the game support Windows 10 at first.
Bests,
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