Windows 10: Game lags and stutters on external monitor

Hi there, I just bought a new laptop, specifically an Asus Zenbook 14. Which has an Intel Core Ultra 7, Intel ARC IGPU and 16 GB of RAM. I tried to play some games on it, for example Football Manager which is not a game that requires a high-end PC and it ran smoothly without any problems.However when I close the lid and use only my external monitor AOC 27G2U5 using an HDMI cable, the first thing I notice is that the display is not that sharp. When I play a game on it, the FPS drops and the game stutters.I tried a lot of stuff from other threads such as: different HDMI cables, updating drivers,

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Fix the stuttering in external monitors

Do all games stutter on the external monitor ?

Are you using the same resolution in the games on the laptop as your are on the external monitor ?

What brand and model graphics processor does your machine use ?

 

External Monitor Stutter

Business environment, 5x laptops, all experiencing graphical glitches in terms of all applications show lag/stutter when moving a window or typing using an external screen.

The issue never occurs when the laptop is un-docked and when working with the internal screen, or when the laptop is docked, the lid is open and the internal screen on.

The issue occurs when the laptop is connected to the docking station, the lid is closed and one or more external displays are used.

The issue can be reproduced when:

a) The laptop is on and un-docked. The lid gets closed (internal monitor off), the laptop gets connected to the docking station and one ore more external monitors are used. Stutters occur about 50% of the time, so basically every other time one comes back
from a meeting with the laptop.

b) Docked, sign off for 10min and signing back in, stutter occurs about 50% of the time.

The error can be temporarily fixed if the Intel GPU is disabled and reenabled in the device-manager, but occurs again the next time the laptop is undocked/docked.

Laptops used: Five Lenovo P1 laptops with dedicated Quadro P2000 and Intel(R) UHD Graphics P630 GPU's. I think this has to do with dual Nvidia and Intel GPU laptops, as there is a long thread on this topic in the Nvidia form:

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Does anybody have a fix for this, or is there another thread dedicated to this issue?

 

Fix the stuttering in external monitors

I suppose it is windows 10 problem, I just bought a new external monitor for my laptop and any fps game is horribly stuttering. I have seen multiple complaints about this issue, I wonder is there any permanent fix for that or I will have to return my monitor
back, because windows 10 isn't optimized properly be developers.