Performance difference between internal and external monitor - Optimus

[Antyherowow]

Something strange happens when I am playing in the emulator cemu or any other game, when I am using my notebook to play, my emulator gets fps around 45 to 49 and when I connect to an external monitor with the same resolution, the fps jump for 60 or even more, and this goes for any game, anyone have any idea what it can be? 

BIOS AMI 

my specifications NVIDIA GEFORCE GTX 1050TI GPU PROCESSOR INTEL® CORET I5 7300HQ 8 GB DDR4 MEMORY 15.6 "IPS FULLHD 16: 9


Is it that unlocking something in bios can change from muxless to muxed, or can you tell me if there is in my bios any way to change the display to use the pci of the nvidia notebook instead of the intel?

My Bios Backup 

https://www54.zippyshare.com/v/3PVX9FFR/file.html