### My setup

**OS:** Arch Linux + Omarchy
**Kernel:** 6.16.8-arch3-1  
**GPU:** NVIDIA RTX 4090 (driver 580.82.09) + AMD Raphael iGPU
**Monitors:**
- DP-3: Apple Studio Display 5K (5120x2880@60Hz, scale 2x)
- HDMI-A-2: Dell S2721QS 4K (3840x2160@60Hz, scale 1.5x)

---

### The problem

My cursor was lagging. Bad.

Moving between monitors felt like dragging through mud. The 5K display was the worst. Stuttery. Delayed. Frustrating as hell.

I thought it was the monitors. Or maybe Hyprland. Or just Wayland being Wayland.

It wasn't.

---

### What I found

Here's what was actually wrong:

**1. Generic monitor config**  
My `monitors.conf` had `monitor=,preferred,auto,auto`. This tells Hyprland absolutely nothing useful. It can't optimize. It just guesses.

**2. Hardware cursors on NVIDIA**  
NVIDIA drivers hate hardware cursors on Wayland. Always have. Causes stuttering and lag.

**3. Missing NVIDIA environment variables**  
I have both an RTX 4090 and an AMD iGPU. Multi-GPU systems on NVIDIA need specific env vars or they shit the bed.

**4. Fractional scaling**  
The Dell at 1.5x scale was adding overhead. Not huge, but noticeable.

---

### The fix

I made these changes and the lag disappeared completely.

**In `~/.config/hypr/monitors.conf`:**
```conf
# Be explicit about each monitor
monitor = DP-3, 5120x2880@60, 0x0, 2
monitor = HDMI-A-2, 3840x2160@60, 2560x0, 1.5

# This helps with NVIDIA rendering
env = WLR_DRM_NO_ATOMIC,1
```

**In `~/.config/hypr/hyprland.conf`:**
```conf
# NVIDIA stuff
env = WLR_NO_HARDWARE_CURSORS,1
env = GBM_BACKEND,nvidia-drm
env = __GL_GSYNC_ALLOWED,1
env = __GL_VRR_ALLOWED,1
env = OGL_DEDICATED_HW_STATE_PER_CONTEXT,ENABLE_ROBUST
```

**In `~/.config/hypr/looknfeel.conf`:**
```conf
misc {
    vrr = 1
    vfr = true
    mouse_move_enables_dpms = true
}

cursor {
    no_hardware_cursors = true
    enable_hyprcursor = true
}
```

---

### Why this works

**`WLR_NO_HARDWARE_CURSORS=1`** - Forces software cursors. NVIDIA's hardware cursor implementation on Wayland is broken. Has been for years.

**`OGL_DEDICATED_HW_STATE_PER_CONTEXT=ENABLE_ROBUST`** - Fixes multi-GPU issues on NVIDIA driver 550+. Critical if you have both NVIDIA and AMD GPUs like I do.

**`no_hardware_cursors = true`** - Same thing but in Hyprland's config. Double insurance.

**Explicit monitor configs** - Tells Hyprland exactly what you want instead of making it guess.

---

### Result

Cursor is smooth now. Feels like 60fps should feel. No lag between monitors.

Took me way too long to figure this out. Hopefully saves someone else the trouble.

---

### Why I'm posting this

This might be useful for Omarchy's default config or docs. A lot of people run NVIDIA + multi-monitor setups. They'll hit this.

Just sharing what worked for me.