A: Almost certainly not. Unless the link leads directly to steamcdn-a.akamaihd.net (Steam’s official CDN), avoid it.
A: Proton handles Windows DLLs automatically. Simply reinstall the game via Steam Play. Do not manually download DLLs. steamapidll for grid autosport link
If the file keeps disappearing, your antivirus is the culprit. A: Almost certainly not
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