HELIOS 300 FPS CAPPED AT 60

Even im having the same problem

Disable V-sync from the game, if it doesnt work, disable it from the Nvidia experience. If that doesnt work check if whisper mode is enabled in Nvidia Ex.
(This will cap your FPS, there is a setting at what FPS to be capped in Nvidia Control Panel. You can just disable whisper mode).
Last thing you have to do is update your Intel GPU and Nvidia GPU drivers.

I was capped at 60 FPS until I updated Intel GPU driver. It doesnt make sense for me but that did the job.
And by the way if you are playing on the notebook display (which is 60 Hz ) you dont need more that 60 FPS. Sometimes 60 FPS with V-sync ON is better that 100 FPS without V Sync. Higher FPS than 60 would cause more load on the CPU and GPU, which means more heat and you will not notice any improvement on the graphics.