If you experience poor performance while testing a snapshot, go back to the last official release - the snapshot you’re using may be poorly optimized. It also gives you the option to playtest “snapshots,” or future updates that are still in development. The Minecraft Launcher keeps your game updated to the latest version automatically. To do so, navigate to the “Windows Update” panel in “Settings” and check for updates. Start by confirming that you are running the latest version of Windows.
For the best results, gaming-related software should be kept up to date.