Here are some screenshots at 5120 x 2880 just to show that its quite possible and runs quite well on a 4K monitor. Note some of these may be very large...
Default zoom level with a unit detail window open:
Zoomed out once:
A zoomed in snippet:
Another zoomed in snippet (may look the same but they are not):
Zoomed in all the way:
Same but note the wonderful detail of the knocked out guns!
