I can't write smoothly anymore using Excalidraw and S Pen

I using Obsidian for my patients’ medical records (~3000 file until today) completely offline on my Galaxy Tab.
Everything works great since I set up my workflow. But recently I feeling very high slowness during handwriting or simple drawing.

I uploaded a video here as demo to show you this slowness while S Pen works perfectly in other note-taking app like Zoho Notebook or Samsung Notes.

There is any way to improve speed or sensitivity of pen on Excalidraw? for example using template file!! to remove this delay or slowness.