The core update was a dramatic overhaul of the timeline rendering engine. Adobe claimed up to 3x faster drawing and navigation—and for once, benchmarks agreed. Scrubbing through 8K RED or H.264 footage felt snappier on mid-range hardware. The new in the export dialog meant that effects like Lumetri Color, Gaussian Blur, and basic 3D layers no longer bogged down the CPU, allowing for smoother playback without proxy generation.
Result: Export times for 4K H.264 footage dropped by an average of 45% compared to Premiere Pro 14. adobe premiere pro 15 update