Fix: Disable the "Adobe Crash Reporter" and delete the Media Cache:

CC 2015 was a turning point for color grading. It solidified the Lumetri Color Panel, making it faster and more intuitive to apply complex looks directly within the editing timeline without needing to round-trip to After Effects or SpeedGrade.

Adobe Premiere Pro CC 2015 is an older version of Adobe’s professional video-editing software released in 2015. It introduced several workflow improvements over previous CS and early CC releases, but it is no longer supported by Adobe and lacks features, performance improvements, and security patches present in later releases.

This was the version where Adobe seriously embraced immersive video. It introduced field-of-view modes and VR workflow tools that laid the groundwork for modern 360 editing.