The community has put significant effort into optimizing custom ROMs for the Cactus.
The Xiaomi Redmi 6 6A Cactus Eng ROM is a diagnostic tool, not a daily OS. It lacks Google Play Services by default (you can side-load them, but performance will be laggy). Battery life drops by roughly 40% due to verbose logging. Camera quality degrades because proprietary MIUI camera libs are replaced with generic HALs. Xiaomi Redmi 6 6A Cactus Eng Rom
The specific "Cactus" Eng ROM package matching your hardware revision. The community has put significant effort into optimizing
A: No. A Custom ROM (like LineageOS or Pixel Experience) is built by third-party developers for users. An Eng ROM is a leaked/official factory firmware meant for debugging hardware. Xiaomi Redmi 6 6A Cactus Eng Rom