External screen doesn´t work after update in KDE Manjaro

Dear community,

I quite regularly use an external screen with my laptop. In which case I only use the external screen, the I always turn off the laptop screen. After the last update (or maybe one before that), a bug occurred causing an use lag between my input and what I see on the screen. For example, if i hover my cursus over an icon in the bottom panel, it doesn´t highlight it anymore and when I move a window, i have to wait for like 10 seconds before it actually happens (with stutters).

The strange thing is that if i don´t turn off the laptop screen, and use both screens along side each other, it seems to work just fine.

I’m running a 12th gen intel processor and a Nvidia RTX3060.

Is there a way to fix this?

Thanks in advance for your help.

Kind regards