Yes, if you play graphic demanding games, then you can select the HIGH performance mode PLAN, instead of the "balanced" mode. When not needed revert back to the "balanced" or even the "power saver" OS mode, if required.
Though, using the above high performance mode won't always help you in Games, or increase the FPS. The performance will also depend on other factors as well, GPU and CPU temp/usage, game being played, and the screen resolution applied among other factors. Though, I can't comment whether using this high mode will also make the PSU work harder.
What are you full PC specs ?