Green simply means its a playable frame rate (Green for Go). I think it Drops to white when it goes below 30 fps which is considered by most to be jerky. Personally anything below 45 and I see it has jerky, some 60 fps, depends on ones tolerances. FRAPS employs a similar system.
It doesn't work like SWTORs FPS meter if that's what you are thinking. Best thing you can ever do is turn it off, if it looks smooth then don't fixate on frame rate, ever!
MMOs by there nature tend to be more CPU intensive than GPU. All that may change as there's some mighty looking MMOs on the horizon but historically they are more CPU hogs.
EDIT: Regards saying it goes to yellow and red, I cannot comment cause I've never seen it below 25 on highest settings.
Nerevariine wrote: »Hmm yeah, paying more attention, white is above 60 FPS - green is below - then I presume yellow and red.
Would have been nice to see the OP's functionality though
Yeah, there was a server latency spike for about 5 minutes when my FPS dropped to 7-15...
I assume red means 'leave this game and assault your internet provider'