This takes 2 hours of learning, but yields a clean, malware-free Lite version.
Many background services like Windows Update, Windows Defender (in some versions), and Telemetry are disabled or removed to free up CPU cycles. Windows 7 Lite Oprekin
(Note: I will also suggest related search terms to help research this further.) This takes 2 hours of learning, but yields
The result is an ISO file that is significantly smaller than the official release, often requiring less RAM and hard drive space to operate smoothly. This takes 2 hours of learning