There are several possible reasons for a slow or unstable internet connection from your laptop. To improve the performance of your connection, you should consider:

1. Checking the signal strength of the wireless network you are connected to.
2. Restarting your laptop and the modem or router.
3. Ensuring you are using the most updated version of your web browser.
4. Clearing your web browser’s cache.
5. Cleaning up any useless files or programs from your laptop.
6. Changing the wireless channel your device is connected to.
7. Updating your device drivers.