Clear cookies and cache: Regularly clear your browser's cookies and cache to fix slowness. Follow the steps here and restart your browser.

Pause downloads/uploads: Downloading large files consumes bandwidth and can cause lag. Pause these activities while playing.

Close streaming tabs: Streaming video or music also uses bandwidth. Pause streaming while you play chess.

Disable browser extensions: Extensions may use a lot of memory or interfere with Chess.com. Disable them during your games.

Check Task Manager: Close any programs using a lot of memory.

Close extra browser tabs: Even non-streaming tabs use memory. Close all except Chess.com.

Update your browser: Ensure you have the latest version. If using Internet Explorer, switch to Chrome or Firefox.

Use a wired connection: WiFi can be unstable. Try a wired connection or move closer to your router.

Close Other Apps: Close any other apps or programs on your device that might be using memory and system resources to ensure the app has the maximum resources available.

Use Wi-Fi Instead of 3G/4G: Sometimes an unstable connection can cause issues. Try being closer to your router if possible.

Update Operating Software: Ensure your device's operating system is completely updated.

Check Phone Memory: If your phone has very limited memory (especially less than 2 GB), this will affect the functionality and speed of your apps.

Reinstall the App: A fresh installation of the app can often fix issues caused by data corruption.