this would be the case if there wasn't an external entity with its own timesource (i.e. the game server) interrogating your machine while the game in underway

this would be the case if there wasn't an external entity with its own timesource (i.e. the game server) interrogating your machine while the game in underway if there's a VMEXIT it will be measurable, and you have no ability to virtualise the server's clock