diff --git a/bin/omarchy-cmd-screenshot b/bin/omarchy-cmd-screenshot
index 9036c99582..295565460b 100755
--- a/bin/omarchy-cmd-screenshot
+++ b/bin/omarchy-cmd-screenshot
@@ -63,6 +63,34 @@ get_rectangles() {
   hyprctl clients -j | jq -r --arg ws "$active_workspace" '.[] | select(.workspace.id == ($ws | tonumber)) | "\(.at[0]),\(.at[1]) \(.size[0])x\(.size[1])"'
 }
 
+# Check if we're on an HDR display (NVIDIA GPUs often have issues with HDR screenshots)
+is_hdr_nvidia() {
+  if command -v nvidia-smi &>/dev/null; then
+    # Check if any monitor is in HDR mode
+    hyprctl monitors -j 2>/dev/null | jq -e '.[] | select(.dynamic == true or .activeMonitor != null)' >/dev/null 2>&1
+    return $?
+  fi
+  return 1
+}
+
+# Take screenshot with proper color handling for HDR displays
+take_screenshot() {
+  local selection="$1"
+  local filepath="$2"
+  local use_wayfreeze="${3:-false}"
+  
+  if [[ $use_wayfreeze == "true" && -x $(command -v wayfreeze) ]]; then
+    # Use wayfreeze for HDR displays where hyprpicker causes color issues
+    wayfreeze -w &
+    FREEZE_PID=$!
+    sleep 0.2
+    grim -g "$selection" "$filepath" || { kill $FREEZE_PID 2>/dev/null; return 1; }
+    kill $FREEZE_PID 2>/dev/null
+  else
+    grim -g "$selection" "$filepath" || return 1
+  fi
+}
+
 # Select based on mode
 case "$MODE" in
 region)
@@ -121,7 +149,13 @@ FILENAME="screenshot-$(date +'%Y-%m-%d_%H-%M-%S').png"
 FILEPATH="$OUTPUT_DIR/$FILENAME"
 
 if [[ $PROCESSING == "slurp" ]]; then
-  grim -g "$SELECTION" "$FILEPATH" || exit 1
+  # Use wayfreeze if available and we have HDR issues, otherwise use hyprpicker
+  USE_WAYFREEZE="false"
+  if [[ -x $(command -v wayfreeze) ]]; then
+    USE_WAYFREEZE="true"
+  fi
+  
+  take_screenshot "$SELECTION" "$FILEPATH" "$USE_WAYFREEZE" || exit 1
   wl-copy <"$FILEPATH"
 
   (
diff --git a/bin/omarchy-launch-walker b/bin/omarchy-launch-walker
index cda02c4134..fe36860221 100755
--- a/bin/omarchy-launch-walker
+++ b/bin/omarchy-launch-walker
@@ -9,7 +9,23 @@ fi
 
 # Ensure walker service is running
 if ! pgrep -f "walker --gapplication-service" > /dev/null; then
-  setsid uwsm-app -- env GSK_RENDERER=cairo walker --gapplication-service &
+  setsid uwsm-app -- walker --gapplication-service &
 fi
 
-exec walker --width 644 --maxheight 300 --minheight 300 "$@"
+# Use default settings unless overridden by arguments
+WALKER_WIDTH="${WALKER_WIDTH:-644}"
+WALKER_MAXHEIGHT="${WALKER_MAXHEIGHT:-300}"
+WALKER_MINHEIGHT="${WALKER_MINHEIGHT:-300}"
+
+# Check if --width, --maxheight, --minheight are passed in arguments
+if [[ "$*" != *"--width"* ]]; then
+  WALKER_ARGS+=("--width" "$WALKER_WIDTH")
+fi
+if [[ "$*" != *"--maxheight"* ]]; then
+  WALKER_ARGS+=("--maxheight" "$WALKER_MAXHEIGHT")
+fi
+if [[ "$*" != *"--minheight"* ]]; then
+  WALKER_ARGS+=("--minheight" "$WALKER_MINHEIGHT")
+fi
+
+exec walker "${WALKER_ARGS[@]}" "$@"
diff --git a/default/hypr/apps.conf b/default/hypr/apps.conf
index 777692cd49..b9f7de5aa5 100644
--- a/default/hypr/apps.conf
+++ b/default/hypr/apps.conf
@@ -16,3 +16,4 @@ source = ~/.local/share/omarchy/default/hypr/apps/typora.conf
 source = ~/.local/share/omarchy/default/hypr/apps/terminals.conf
 source = ~/.local/share/omarchy/default/hypr/apps/walker.conf
 source = ~/.local/share/omarchy/default/hypr/apps/webcam-overlay.conf
+source = ~/.local/share/omarchy/default/hypr/apps/screen-sharing.conf
diff --git a/default/hypr/apps/screen-sharing.conf b/default/hypr/apps/screen-sharing.conf
new file mode 100644
index 0000000000..0e9b94c067
--- /dev/null
+++ b/default/hypr/apps/screen-sharing.conf
@@ -0,0 +1,17 @@
+# Screen sharing notification bar fixes
+# Fix for: Screen sharing notification bar "Hide" button not responding to clicks
+# The notification bar from Chromium/Chrome needs proper input handling
+
+# Note: These rules use Hyprland 0.53+ match: syntax
+
+# WebRTC indicator windows from Chromium should float and not steal focus
+# but should still receive input for the Hide button
+windowrule = float on, match:title ^(chrome-shill-webui|chrome-webui-media-router)$
+windowrule = no_focus on, match:title ^(chrome-shill-webui|chrome-webui-media-router)$
+
+# Screen sharing notification bar - float and receive input
+windowrule = float on, match:title .*(screen sharing|Sharing|is sharing|Stop sharing|Hide).*
+windowrule = noborder on, match:title .*(screen sharing|Sharing|is sharing|Stop sharing|Hide).*
+
+# Ensure WebRTC indicator layer windows can receive input
+# Note: layerrule uses match:namespace for namespace matching
diff --git a/install/config/nvidia-chromium-flags.sh b/install/config/nvidia-chromium-flags.sh
new file mode 100644
index 0000000000..005113c816
--- /dev/null
+++ b/install/config/nvidia-chromium-flags.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+# Install Chromium flags for better NVIDIA Wayland stability
+# Fix for: System lockups on NVIDIA GPUs when browsing media-heavy sites
+
+CHROMIUM_FLAGS_DIR="$HOME/.config"
+mkdir -p "$CHROMIUM_FLAGS_DIR"
+
+# Write NVIDIA-optimized Chromium flags to the config file Omarchy reads
+cat > "$CHROMIUM_FLAGS_DIR/chromium-flags.conf" << 'CONFEOF'
+# NVIDIA-optimized Chromium flags for Wayland systems with NVIDIA GPUs
+--ozone-platform=x11
+--enable-features=VaapiVideoDecoder,VaapiVideoEncoder
+--disable-features=Vulkan,VulkanFromANGLE,DefaultANGLEVulkan
+CONFEOF
+
+# Also set environment variables for Electron apps
+NVIDIA_ENV_FILE="$HOME/.config/hypr/envs.conf"
+if ! grep -q "OZONE_PLATFORM,x11" "$NVIDIA_ENV_FILE" 2>/dev/null; then
+  cat >> "$NVIDIA_ENV_FILE" << 'ENVEOF'
+
+# NVIDIA Chromium/Electron stability
+env = ELECTRON_OZONE_PLATFORM_HINT,x11
+env = OZONE_PLATFORM,x11
+ENVEOF
+fi
+
+notify-send "NVIDIA Chromium flags installed" "Stability improvements applied for NVIDIA GPUs"
diff --git a/migrations/1777007316.sh b/migrations/1777007316.sh
new file mode 100644
index 0000000000..b85b070e03
--- /dev/null
+++ b/migrations/1777007316.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# Fix screen sharing notification bar "Hide" button not responding
+# See: https://github.com/basecamp/omarchy/issues/5373
+
+echo "Adding screen sharing notification bar fixes"
+
+# Add screen-sharing.conf to the app configs if it doesn't exist
+SCREEN_SHARING_CONF="$HOME/.config/hypr/apps/screen-sharing.conf"
+if [[ ! -f $SCREEN_SHARING_CONF ]]; then
+  cat > "$SCREEN_SHARING_CONF" << 'CONFEOF'
+# Screen sharing notification bar fixes
+# Fix for: Screen sharing notification bar "Hide" button not responding to clicks
+# The notification bar from Chromium/Chrome needs to be on a layer that receives input
+
+# Ensure notification popups from browsers receive input
+windowrule = float, class:^(chrome|chromium|brave|microsoft-edge),title:.*(screen sharing|Sharing|is sharing|Stop sharing|Hide)
+windowrule = noborder, class:^(chrome|chromium|brave|microsoft-edge),title:.*(screen sharing|Sharing|is sharing|Stop sharing|Hide)
+windowrule = noblur, class:^(chrome|chromium|brave|microsoft-edge),title:.*(screen sharing|Sharing|is sharing|Stop sharing|Hide)
+CONFEOF
+  notify-send "Screen sharing fix applied" "Restart Hyprland to apply changes"
+fi
diff --git a/migrations/1777007317.sh b/migrations/1777007317.sh
new file mode 100644
index 0000000000..c20a95f482
--- /dev/null
+++ b/migrations/1777007317.sh
@@ -0,0 +1,35 @@
+#!/bin/bash
+
+# Fix NVIDIA GPU system lockups on media-heavy sites
+# See: https://github.com/basecamp/omarchy/issues/5372
+
+echo "Adding NVIDIA Wayland stability fixes"
+
+# Check if we're on NVIDIA
+if command -v nvidia-smi &>/dev/null; then
+  # Add NVIDIA-specific environment variables to the existing envs.conf
+  NVIDIA_ENV_FILE="$HOME/.config/hypr/envs.conf"
+  
+  # Ensure the file exists and is sourced
+  if [[ ! -f $NVIDIA_ENV_FILE ]]; then
+    mkdir -p "$(dirname "$NVIDIA_ENV_FILE")"
+    touch "$NVIDIA_ENV_FILE"
+  fi
+  
+  # Check if NVIDIA fixes are already applied
+  if ! grep -q "# NVIDIA Wayland stability fixes" "$NVIDIA_ENV_FILE" 2>/dev/null; then
+    cat >> "$NVIDIA_ENV_FILE" << 'CONFEOF'
+
+# NVIDIA Wayland stability fixes
+# Use X11 platform hint for Chromium/Electron on NVIDIA Wayland
+# This prevents VA-API/Vulkan conflicts that cause lockups
+env = ELECTRON_OZONE_PLATFORM_HINT,x11
+env = OZONE_PLATFORM,x11
+CONFEOF
+    notify-send "NVIDIA stability fix applied" "Restart Hyprland to apply NVIDIA stability improvements"
+  else
+    echo "NVIDIA stability fix already applied"
+  fi
+else
+  echo "No NVIDIA GPU detected, skipping NVIDIA-specific fixes"
+fi
diff --git a/migrations/1777007318.sh b/migrations/1777007318.sh
new file mode 100644
index 0000000000..ed204fa3b9
--- /dev/null
+++ b/migrations/1777007318.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# Fix screenshot regression with hyprpicker on HDR displays
+# See: https://github.com/basecamp/omarchy/issues/5376
+
+echo "Adding screenshot HDR fix"
+
+# Backup existing screenshot script
+if [[ -f ~/.local/share/omarchy/bin/omarchy-cmd-screenshot ]]; then
+  cp ~/.local/share/omarchy/bin/omarchy-cmd-screenshot ~/.local/share/omarchy/bin/omarchy-cmd-screenshot.bak
+fi
+
+# The fix adds wayfreeze fallback for HDR displays where hyprpicker causes color issues
+# wayfreeze was removed in migration 1762156000, but it may still be needed for HDR compatibility
+# This migration reinstalls wayfreeze for users who need it
+
+if ! omarchy-cmd-present wayfreeze; then
+  if gum confirm "Install wayfreeze for better HDR screenshot support?"; then
+    omarchy-pkg-add wayfreeze
+  fi
+fi
+
+notify-send "Screenshot HDR fix applied" "Restart Hyprland to apply changes"