Files claiming "Photoshop CC 32-bit highly compressed" (often under 1 GB) are :

That night, she published it on a dead protocol—Gopher, of all things. It spread slowly, then all at once. Copies multiplied. The 32-bit edit couldn't be tracked because the tool that made it no longer officially existed.

Highly compressed files take longer to "unpack" during installation because the CPU has to decompress the data in real-time. Risks and Precautions