diff --git a/excalidraw-app/App.tsx b/excalidraw-app/App.tsx
index 932743ddfd..40c14ca3e3 100644
--- a/excalidraw-app/App.tsx
+++ b/excalidraw-app/App.tsx
@@ -134,6 +134,7 @@ import DebugCanvas, {
 } from "./components/DebugCanvas";
 import { AIComponents } from "./components/AI";
 import { ExcalidrawPlusIframeExport } from "./ExcalidrawPlusIframeExport";
+import { FreedrawDebugSliders } from "./components/FreedrawDebugSliders";
 
 import "./index.scss";
 
@@ -1142,6 +1143,7 @@ const ExcalidrawWrapper = () => {
             ref={debugCanvasRef}
           />
         )}
+        <FreedrawDebugSliders />
       </Excalidraw>
     </div>
   );
diff --git a/excalidraw-app/components/FreedrawDebugSliders.tsx b/excalidraw-app/components/FreedrawDebugSliders.tsx
new file mode 100644
index 0000000000..bf8b66b111
--- /dev/null
+++ b/excalidraw-app/components/FreedrawDebugSliders.tsx
@@ -0,0 +1,88 @@
+import { DRAWING_CONFIGS } from "@excalidraw/element";
+import { useState, useEffect } from "react";
+
+export const FreedrawDebugSliders = () => {
+  const [streamline, setStreamline] = useState<number>(
+    DRAWING_CONFIGS.default.streamline,
+  );
+  const [simplify, setSimplify] = useState<number>(
+    DRAWING_CONFIGS.default.simplify,
+  );
+
+  useEffect(() => {
+    if (!window.h) {
+      window.h = {} as any;
+    }
+    if (!window.h.debugFreedraw) {
+      window.h.debugFreedraw = DRAWING_CONFIGS.default;
+    }
+
+    setStreamline(window.h.debugFreedraw.streamline);
+    setSimplify(window.h.debugFreedraw.simplify);
+  }, []);
+
+  const handleStreamlineChange = (value: number) => {
+    setStreamline(value);
+    if (window.h && window.h.debugFreedraw) {
+      window.h.debugFreedraw.streamline = value;
+    }
+  };
+
+  const handleSimplifyChange = (value: number) => {
+    setSimplify(value);
+    if (window.h && window.h.debugFreedraw) {
+      window.h.debugFreedraw.simplify = value;
+    }
+  };
+
+  return (
+    <div
+      style={{
+        position: "absolute",
+        bottom: "10px",
+        left: "50%",
+        transform: "translateX(-50%)",
+        zIndex: 9999,
+        padding: "10px",
+        borderRadius: "8px",
+        border: "1px solid #ccc",
+        display: "flex",
+        flexDirection: "column",
+        gap: "8px",
+        fontSize: "12px",
+        fontFamily: "monospace",
+      }}
+    >
+      <div>
+        <label>
+          Streamline: {streamline.toFixed(2)}
+          <br />
+          <input
+            type="range"
+            min="0"
+            max="1"
+            step="0.01"
+            value={streamline}
+            onChange={(e) => handleStreamlineChange(parseFloat(e.target.value))}
+            style={{ width: "150px" }}
+          />
+        </label>
+      </div>
+      <div>
+        <label>
+          Simplify: {simplify.toFixed(2)}
+          <br />
+          <input
+            type="range"
+            min="0"
+            max="1"
+            step="0.01"
+            value={simplify}
+            onChange={(e) => handleSimplifyChange(parseFloat(e.target.value))}
+            style={{ width: "150px" }}
+          />
+        </label>
+      </div>
+    </div>
+  );
+};
diff --git a/packages/excalidraw/components/App.tsx b/packages/excalidraw/components/App.tsx
index d7750e4dd5..6edfb88d2f 100644
--- a/packages/excalidraw/components/App.tsx
+++ b/packages/excalidraw/components/App.tsx
@@ -7594,9 +7594,11 @@ class App extends React.Component<AppProps, AppState> {
       simulatePressure,
       drawingConfigs: {
         pressureSensitivity: this.state.currentItemPressureSensitivity,
-        ...(event.pointerType === "pen"
-          ? DRAWING_CONFIGS.stylus
-          : DRAWING_CONFIGS.default),
+        streamline:
+          window.h?.debugFreedraw?.streamline ??
+          DRAWING_CONFIGS.default.streamline,
+        simplify:
+          window.h?.debugFreedraw?.simplify ?? DRAWING_CONFIGS.default.simplify,
       },
       locked: false,
       frameId: topLayerFrame ? topLayerFrame.id : null,
@@ -11380,6 +11382,10 @@ declare global {
       app: InstanceType<typeof App>;
       history: History;
       store: Store;
+      debugFreedraw?: {
+        streamline: number;
+        simplify: number;
+      };
     };
   }
 }
@@ -11388,6 +11394,9 @@ export const createTestHook = () => {
   if (isTestEnv() || isDevEnv()) {
     window.h = window.h || ({} as Window["h"]);
 
+    // Initialize debug freedraw parameters
+    window.h.debugFreedraw = window.h.debugFreedraw || DRAWING_CONFIGS.default;
+
     Object.defineProperties(window.h, {
       elements: {
         configurable: true,
diff --git a/packages/excalidraw/tests/data/__snapshots__/restore.test.ts.snap b/packages/excalidraw/tests/data/__snapshots__/restore.test.ts.snap
index c389dc629e..cc9e0b987d 100644
--- a/packages/excalidraw/tests/data/__snapshots__/restore.test.ts.snap
+++ b/packages/excalidraw/tests/data/__snapshots__/restore.test.ts.snap
@@ -170,11 +170,6 @@ exports[`restoreElements > should restore freedraw element correctly 1`] = `
   "backgroundColor": "transparent",
   "boundElements": [],
   "customData": undefined,
-  "drawingConfigs": {
-    "pressureSensitivity": 1,
-    "simplify": "0.10000",
-    "streamline": "0.25000",
-  },
   "fillStyle": "solid",
   "frameId": null,
   "groupIds": [],
@@ -196,6 +191,7 @@ exports[`restoreElements > should restore freedraw element correctly 1`] = `
       10,
     ],
   ],
+  "pressureSensitivity": 1,
   "pressures": [],
   "roughness": 1,
   "roundness": {