Tried with 100,110 etc and it gives me

It picks the first two digits which I would think were reserved for other parameters. Using other functions like fg etc works just fine.

Re:modify dpi setting, it would be a nice option. It would also be nice if the sizes were not discreet, i.e because the jump from 80 to 100 dpi for example is too big in my opinion.

And another thing, the smaller the text, the less the definition. It would be nice if it is more defined like the normal text and especially not 'italic'. But i understand that this will take more time to render. But some fonts like Computer Modern already well defined and they load with similar speed.