Since it's likely CS6 Extended, you need:

Running a portable app directly from a Google Drive synced folder (e.g., G:\My Drive\Photoshop CS7 ) is painfully slow. Google Drive’s virtual file system causes high latency. Photoshop frequently reads/writes temporary files, leading to crashes, file corruption, and 5-minute save times.

Instead of chasing a fake "CS7 Portable," use this legitimate workflow:

Searching for "Photoshop CS7 Portable Google Drive" reveals several critical issues regarding the software's legitimacy, security, and origin. The "Photoshop CS7" Myth no official Adobe Photoshop CS7

If you still want to proceed, here is the typical workflow:

. Adobe transitioned from the Creative Suite (CS) branding to Creative Cloud (CC) after Photoshop CS6