I'm playing it right now at 4K but then with 4x MSAA + 4x TRSGSSAA and it looks so amazing, I literally can't see any aliasing even if I look for it so I'm overjoyed. It dropped below 60fps once during a closeup of some explosions + other transparency effects but thats par for the course.
If you are on a modern 4K TV make sure you lower the gamma slider in the settings menu until the contrast becomes more acceptable, the other settings with Default, film, plasma, LCD, CRT etc is really just the brightness afaik so set it to one of the brighter settings if you find the whole image too dark after doing the gamma correction. The lighting will look very flat by default on a TV picture mode calibrated to 2.4 gamma, but especially bad if you are on 2.2 or higher so make sure you change it.
The dialogue is hilarious, I know its meant to be a "HK blood opera" and I love the films so much but its not very well written or VO'd, but thats just how it was back then for many games I suppose.