Disabling Windows Defender by default is a major security risk if the user browses the web or installs cracked software. Also, Windows Update is fully disabled, meaning no security patches unless manually applied—dangerous for daily driving.
There are several custom Windows 10 ISOs available that are specifically designed for gaming. Here are some of the most popular ones: best custom windows 10 iso for gaming
Windows 10 Debloater by Sycnex (GitHub) How it works: Run a PowerShell script that removes OneDrive, disables telemetry, uninstalls bloatware apps, and disables background services. Disabling Windows Defender by default is a major