Phoenix Liteos 11 Pro Neon Edition (22621675) By Fbconaniso -

Significantly lower RAM and CPU usage than stock Windows.

Third-party ISOs are not verified by Microsoft and may contain vulnerabilities. Phoenix LiteOS 11 Pro Neon Edition (22621675) By FBConaniso

Use a tool like Rufus to flash the ISO to a USB drive. Significantly lower RAM and CPU usage than stock Windows