Not an expert on what is possible in that space these days but FPS is actually not that important in trading guis because you don’t need the whole canvas to refresh like you do in something like a shooter.

You don’t have to redraw a lot of things on each event because ladders and the like are mostly static while graphs are only dynamic in the tails.

Without observing your specific use case it is impossible to know what is causing your perception of lag, but I’d be shocked if it was bare refresh rate.

I’d guess their crappy code is just pissing off and not doing anything for big stretches of time because it isn’t good.