Notebook slow down after external monitor connection

[aktaraydin]

Hi All, 

I connected to my lap top an external monitor. Lap top slow down. I can not find solution. 

Laptop: HP Omen 3A692EA

Monitor: LG 34WN700-b 

O.S. : Win11 

Connection Type: HDMI 

What I tried: 

- Updated all software drivers included BIOS 

- Tried differently HDMI cables 

- Tried a different laptop with monitor it also HP. It worked well. 

- Changed Display auto changed from BIOS. Results are the same with Intel card and Nvidia card. 

When I checked task management, SYSTEM is consuming a high-level processor.

Thank you for your attention but I need really help. 

Regards. 

[aktaraydin · Accepted solution]

Edit: I use the monitor without laptop monitor, I am aware that different resolutions affect performance. 

Edit_2:  I tested every resulitons for LG, results are the same.

Edit_3: I re-installed the Win-10. Hz problem has been solved but still laptop is slow even I co not write this text properly. Letter came from behind.

Edit_4: I tried my other laptop which is HP Elitebook, it is working perfect ith LG external monitor.

Edit_5: I deleted driver software of graphic card and Nvidia Experience software, problem has been solved 🙂 

Edit_5: I deleted the Nvidia Experience. Laptop is more an more faster now.