I don't really know what "like lighting" means because this is the first smartphone I've owned and it certainly doesn't respond to simple actions instantly (more like... about 100ms later ). Perhaps smartphones were genuinely sluggish for a while and I didn't notice because I didn't own one? So my perception of sluggishness is different. And of course I am not blaming it for things like slow web pages etc that are network bottlenecked.
By graphics being poor I didn't mean in actual games of course (that would be an invalid comment as you rightly pointed out). I was highlighting my concern for the graphics chip compared to how many pixels the device has. No doubt in the future it will struggle with any marginally demanding games compared to a phone like the GS2 (which is vastly more graphically capable). Though I could have just said that in my first post >_<. And of course the GS2 could also be considered slow in 2 years because the tech is moving so fast.
Currently getting about 1800 on Quadrant which I thought was quite low (to last for 2 years) but maybe with a custom rom it will nearly double.
But clearly if I wanted the best possible gaming on a phone (why lol) I could have opted for a different handset so I can't exactly complain. The pixel count is great for everything else.
As someone who owns nearly every high end phone there is, it has no issues with responsiveness, it's very fast.
It sounds like you have a dodgy unit if your volume bug wasn't fixed by the OTA update.
As for the graphics chip and quadrant, why do they matter? It isn't cutting edge in the graphics department but it can easily run every single game on the market at the moment and that won't change for quite some time - if at all - in the time period that you own it.