Cursor is working not Good!

Hi! I have Galaxy Chromebook 2, and I liked it but unluckily, it is not working well for the previous 2 3 weeks, Cursor is working not properly or smoothly though I have updated the cursor driver,Sometimes on the upper portion of the screen auto click occurs, I have reinstalled the windows, tested on new power plugs but it is not working. It mostly happens when I work on the following site of my client: <a href="https://stampaprints.com/">Stampa prints</a> The above site have Nulled wp-rocket installed in them, and when I start working on it, my laptop becomes very hot and loaded, and after a few minutes cursor becomes hang and auto clicks starts appearing until I restart my laptop. I don't know how to solve it, I have tried several options but no luck. could you suggest me, how to handle this problem. Help me out, guys. Replay me as soon as possible.