I haven't heard back from @Prometheus or @Specter about my issue, so I'm assuming that what the devs intend in the FAQ on their company website by "mid-range computers" is those that include gfx cards of at least a certain quality.
I'm hoping that Dynamight's increased staffing will enable them to regularize and clarify the messaging about min req on all platforms, to avoid disappointing buyers who may not have the same concept of 'mid-range'.
The fact that @Mudz is not the only person I've seen documenting map problems whose gfx cards MEET min reqs, but no fix has been provided this far into the test, is extremely troubling.
It's one thing for devs to decide that the demographic unable to afford to install gfx cards is not a demographic they're interested in; it's another thing for them to ignore players within the focus demographic who are having game-hobbling issues.
Neither, frankly, is a good look for Dynamight Studios as a company, which has so far been praiseworthy in its response to the player community.
Meanwhile, it still doesn't make sense to me that I have been able to use the map on every test so far, on an older computer. My horse might not have gone as fast, and my melee was a mess, but I could play and see where I was going.