just did some test about rings and lags, and it gave me ideas for 2 mods, if someone is interested into making either or both of them.
without any unit, i run the game at 60 fps (i5-4200H 2.8GHz and GTX 950M on laptop).
I've radar and countermeasure enable all the time.
with rings on :
when i zoom into 100 janus, it goes to 12 fps
when i select the janus and zoom in, it goes to 4 fps
without rings on :
when i zoom into 100 janus, it stays at 60 fps
when i select the janus and zoom in, it goes to 6 fps
1st mod : it could be interesting to have a mod that disable the rings after reaching a % of zoomed in, since rings helps a lot zoomed out and less when zoomed in. (maybe leave the ring for some units like ACU/EXP....)
2nd mod : disable range signature for some unit, when it's not worth it. In this example, nobody cares about the radar range on the janus. If you disable radar rings for bombers (at least without the selection but i think it's worth it also with the selection) it will help a lot the fps issue.
those are UI mods for Quality of life, especially toward player with not-so-good computer.