How good is your mac? I've seen lots of people saying their iMac is good, but it ends up being terrible.
I'd like to see a Mac port too. My Mac is a 2.9 GHz Intel Core i9, 32gb ram, Intel UHD Graphics 630. Numbers numbers eh... So, I've just run Grid 2 at 2880x1800 with everything to high or ultra. The benchmark came out with the following frame rates:
- Average of 36.70
- Minimum 18.95
- Max of 43.72
For normal gameplay, I'd usually drop some of the options, like reflections, ambients and a couple others, but personally I think that's not too shabby. With more modest settings, 60fps isn't unreachable.