I Experience Lag Using Goodnotes on Samsung Galaxy Tab S9 FE+

I'm currently using the Samsung Galaxy Tab S9 FE+ mainly for studying purposes. I typically use Samsung Notes and Goodnotes in split-screen mode to take and organize notes. At first, everything runs smoothly, and the S Pen works great. However, after some time, the Goodnotes app starts lagging while writing—it freezes or becomes unresponsive with the pen strokes delayed, making it extremely frustrating to use during study sessions.

I can’t figure out if this issue is coming from the tablet itself or from the Goodnotes app. Either way, it makes note-taking feel unreliable and inefficient. For a tablet in this price range, I expected flawless performance with such basic use.

Samsung and Goodnotes teams, please look into this and provide a fix or clear guidance. Users like me rely on a smooth writing experience, especially for academic use.