Greetings,
Screen resolution, graphics card capabilities, in game settings and the most forgotten difference being actual visual acuity always come into play here when discussing using aids to read the greens. I play mostly like Armand, I rarely use the free cam anymore as I feel I can read the greens accurately enough without it, special cases being an exception. Sometimes I free cam a little if I feel confused.
Now my putting stats are the worst part of my game so you might dismiss that to not using BLI or GRID. I'm pretty much the same even with those aids, mainly because my errors are usually about pace not the read or that I blade the ball improperly at take off. Some folks will just not be convinced or as I stated at the beginning really cannot see what some of us see. So the option to use the GRID/BLI is a good one. If we could only lock that setting, as an option, we'd be going somewhere. Folks that enjoy the challenge can then compete with one another without the fear of someone fudging when they really need to.
The free camera, if you adjust the speed settings to your liking is entirely adequate. Honestly, ask yourself, when was the last time you saw someone in real life on a green laying completely on their stomach or side to read the green and then stay in that position and scope around. I've seen some and I emphasize "some professionals" very occasionally get their eyes that low, but it is usually just from one angle and usually behind the ball or opposite.
I've certainly never done that in real life while playing. I'll squat and walk a bit,that's all. And that is what most of us do in real life, professionals included. Now you can argue that your card, screen, eyes do not cut it and that in real life you can see the breaks better and your mostly right. A lot of it has to do with mentally trusting real life conditions and real life visual cues and real life images more than a screen resolution. So for me, the free camera works perfectly fine.
SC