@luxe Thx for the response - I was referencing some other posts, such as this one. (Thou perhaps it probably only applies to SMR drives). And it's not "Firmware", just Settings.
I checked my 8TB drives, and they actually had write cache disabled by default! According to the article, activating or disabling write cache has a huge impact on performance, as seen in these graphs:
I did not change my drive settings, so mine have had their write cache off all the time. I truly believe that performing the steps in the article will help with drive performance in general, when you are filling up your drives with non-Burst related items. Maybe they will also improve write speed when plotting and perhaps even mining, someone will have to try it out.