Screenshare and low fps on the second monitor

[EduardoGrangeiro2002]

I’m using Hyprland on my laptop that has both Intel and NVIDIA RTX 3050 GPUs. I’ve got two monitors: the built-in laptop display (144Hz) and an external one (240Hz). The thing is, only the laptop screen runs properly at 144Hz — the external monitor keeps fluctuating and doesn’t go anywhere near 240Hz.

When I switch to the NVIDIA drivers, it gets a bit better, but still not close to 200FPS — and I lose the ability to screen share when using NVIDIA. Also, whenever I move the mouse cursor around a lot, the CPU usage of Hyprland spikes hard, and sometimes it causes FPS drops.

Anyone got suggestions on how to fix this setup or improve performance/stability?
I’m using the environment variables recommended for NVIDIA (see below), and I’ve also enabled no_hardware_cursors.