this "Issue" has been hashed over lot's. I hope HT addresses it soon. I for one don't think that people with med/low end should be punished, and/or their gameplay "lacking" due to the field gun visiability.
If you have the $$ for a high end computer, you get the luxury of "seeing" ack and nme gv's from quite a distance away.
If you have a med/low end system, you have to be RIGHT on top of it to see ack/gv's (if then for some settings) and are at a huge disadvantage.
Myself, I have it at a happy medum. I use "ground" view and suffer the FPS hit when i'm eggin' gv's, and I can see the field guns from 'bout 1k out ish, so I at least have a "chance" at seein' 'em and killing them (or avoid being killed).
Granted, I only have a p4 1.4 CPU, 512MB of RDRAM, and a FX5200 128mb card, so i'm squarely in the med/low end of the scale, but well above the min. requirments.
Just a shame that us "poor" folks get discriminated against.