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There's a HUGE difference between how you feel about your own mechanics and how percieve the world around you. Having the game "slow down" is exactly the sort of thing you would expect for a person recently promoted to a higher level (in whatever field they are in) and is likely a long term improvement. It's easy to be overwhelmed the first time you try something more challenging than you're used to know matter how talented you are but that can be just a tempory phase that evaporates as you get comfortable and adjusted. If he had said that he made some tweak to his stance or something like that then it would be wise to be dismissive.