diff --git a/wled00/data/settings_leds.htm b/wled00/data/settings_leds.htm
index caeaacea9..55f8122e8 100644
--- a/wled00/data/settings_leds.htm
+++ b/wled00/data/settings_leds.htm
@@ -381,9 +381,10 @@
 			gId('psu2').innerHTML = s2;
 			gId("json").style.display = d.Sf.IT.value==8 ? "" : "none";
 
-			// show/hide unlimited FPS message
+			// show/hide FPS warning messages
 			gId('fpsNone').style.display = (d.Sf.FR.value == 0) ? 'block':'none';
-			gId('fpsHelp').style.display = (d.Sf.FR.value == 0)? 'none':'block';
+			gId('fpsWarn').style.display = (d.Sf.FR.value == 0) || (d.Sf.FR.value >= 80) ? 'block':'none';
+			gId('fpsHigh').style.display = (d.Sf.FR.value >= 80) ? 'block':'none';
 		}
 		function lastEnd(i) {
 			if (i-- < 1) return 0;
@@ -875,8 +876,9 @@ Swap: <select id="xw${s}" name="XW${s}">
 			<option value="3">None (not recommended)</option>
 		</select><br>
 		Target refresh rate: <input type="number" class="s" min="0" max="120" name="FR" oninput="UI()" required> FPS
-		<div id="fpsHelp" style="display: block;"><i>use 0 for unlimited</i><br></div>
-		<div id="fpsNone" class="warn" style="display: none;">Unlimited FPS Mode<br></div>
+		<div id="fpsNone" class="warn" style="display: none;">&#9888; Unlimited FPS Mode  is experimental &#9888;<br></div>
+		<div id="fpsHigh" class="warn" style="display: none;">&#9888; High FPS Mode is experimental.<br></div>
+		<div id="fpsWarn" class="warn" style="display: none;">Please <a class="lnk" href="sec#backup">backup</a> WLED configuration and presets first!<br></div>
 		<hr class="sml">
 		<div id="cfg">Config template: <input type="file" name="data2" accept=".json"><button type="button" class="sml" onclick="loadCfg(d.Sf.data2)">Apply</button><br></div>
 		<hr>
diff --git a/wled00/data/settings_sec.htm b/wled00/data/settings_sec.htm
index fa75882c0..5181858d5 100644
--- a/wled00/data/settings_sec.htm
+++ b/wled00/data/settings_sec.htm
@@ -57,7 +57,7 @@
 		<h3>Software Update</h3>
 		<button type="button" onclick="U()">Manual OTA Update</button><br>
 		Enable ArduinoOTA: <input type="checkbox" name="AO">
-		<hr>
+		<hr id="backup">
 		<h3>Backup & Restore</h3>
 		<div class="warn">&#9888; Restoring presets/configuration will OVERWRITE your current presets/configuration.<br>
 		Incorrect upload or configuration may require a factory reset or re-flashing of your ESP.</div>