Disclaimer: Modifying your operating system can lead to stability issues. Always back up your data before installing a custom operating system.

Before you format your drive, keep these three things in mind:

Choose “Custom: Install Windows only” and delete all partitions on your gaming drive. Do not dual-boot with a custom ISO—it can corrupt your main Windows bootloader.

This isn't a "mod," but an official Microsoft version designed for ATMs and medical devices. It has bloatware, no Cortana, and no unnecessary updates. The Best Custom Windows 10 ISO for Gaming - XbitLabs

For peak gaming performance on Windows 10 in 2026, the consensus among power users highlights Ghost Spectre