Extreme resolution (e.g. 5.5K+, high bit depth, high frame rate, computationally demanding compression, etc.) can bring even a talented workstation to its knees. However, in our context there is really no such thing as a “fast computer;” a workstation is a combination of hardware, firmware, software, and operator competencies, and any one may drastically depreciate the other/s.
A common strategy for dealing with editing, rendering, and encoding output is to establish a “proxy” workflow; using less demanding “proxies” rather then original “resource hog” originals. A proxy workflow is still dependent upon the hardware, firmware, software, and practitioner, though…
This video (51:22) explores configuration and operational strategies in Premiere Pro (as of November, 2020) that should be orchestrated thoughtfully for the sake of productivity and efficiency.