Ghost Spectre Windows 8.1 Pro Link

The install sizes for LTSC can vary significantly; while some users report a 40GB footprint, many find a clean installation to be closer to 11-14GB.

Ghost Spectre is a completely unofficial Windows modification. This custom ISO image is created by independent enthusiasts who meticulously strip out components deemed non-essential for most users. For the 8.1 Pro version specifically, the developers target every area that typically slows down a standard installation: pre-installed apps, telemetry services, background processes, and visual effects that consume memory and CPU cycles. Ghost Spectre Windows 8.1 Pro

Ghost Spectre is a well-known developer in the custom Windows modding community. They create "Superlite" and "Compact" versions of standard Microsoft operating systems. Ghost Spectre Windows 8.1 Pro is a heavily modified, stripped-down version of the original Windows 8.1 Pro. The install sizes for LTSC can vary significantly;

“I’ve seen quite a few people claim that their version had malware on it — however I’ve also found that apparently there’s fake sites with malware infested versions of it floating around” For the 8

Standard Windows Updates are typically disabled or broken in custom builds. While this prevents performance degradation, it means your system will miss critical security patches against newly discovered exploits.