The update included a newer version of the RED SDK. For editors working with RED EPIC or WEAPON footage, 11.1.2 brought faster debayering and better handling of RED’s color science. Specifically, it allowed for real-time playback of 5K and 6K files at 1/4 resolution on high-end workstations without rendering.
This is the most valuable technical content for users on older hardware. Adobe Premiere Pro CC 2017 11.1.2
One of the strongest reasons to use CC 2017 on an older machine is its efficient Proxy workflow. The update included a newer version of the RED SDK
How to do it:
Why 11.1.2? This version optimized the "Automate to Sequence" feature to work seamlessly with proxies, making it smoother than earlier bug-prone versions. Why 11
Adobe Premiere Pro CC 2017 (v11.1.2): Features, Workflow Best Practices, and Migration Guide