I don't think you understand the issue, Barry.
I do not normally play with an overlay, but have used one to deduce the Low FPS icon is in error.
Using the console command you provided merely affirms what I already knew: my FPS is fine and the icon is in error.
According to the drawfps console command, I never drop below 60 FPS and typically average much higher.
I'm not trying to display my FPS in game.
I'm trying to remove the Low FPS icon from my game screen. Why is there no option to do so similarly to other warning icons?
Please get back to me when you have a proper solution.