diff --git a/docs/changelog.d/+ringtail-vrr-flicker.bugfix.md b/docs/changelog.d/+ringtail-vrr-flicker.bugfix.md
new file mode 100644
index 0000000..cb23344
--- /dev/null
+++ b/docs/changelog.d/+ringtail-vrr-flicker.bugfix.md
@@ -0,0 +1 @@
+Disabled adaptive sync (VRR) on ringtail's DP-1 output. The OMEN 27i IPS panel pumps brightness when its refresh rate swings into the low VRR range during low-framerate content (e.g. game cutscenes), producing a flicker that worsened over a session until a reboot. Pinning the panel to a fixed 165Hz eliminates it.
diff --git a/nixos/ringtail/configuration.nix b/nixos/ringtail/configuration.nix
index f01ce9f..bc893d5 100644
--- a/nixos/ringtail/configuration.nix
+++ b/nixos/ringtail/configuration.nix
@@ -337,7 +337,12 @@ in
         output = {
           "DP-1" = {
             mode = "2560x1440@165Hz";
-            adaptive_sync = "on";
+            # VRR off: the OMEN 27i IPS pumps gamma/brightness when the panel
+            # refresh swings into its low VRR range (e.g. low-fps game
+            # cutscenes), producing a ~20Hz flicker that compounds over a long
+            # session until a reboot. Fixed refresh at 165Hz eliminates it.
+            # If you want VRR back, cap in-game fps so refresh never dips low.
+            adaptive_sync = "off";
             bg = "~/.config/sway/wallpaper.jpg fill";
           };
         };