To your point, many macs dont play games well (as you stated). I had a beefed up macbook pro 2019 ($4500) and I could play fornite, but it only got around 40fps. I had a 5k iMac that I played rocket league on, but that was about it. I have a PC for playing games. I've seen some games played on mac, but even in 2020, they just don't perform well enough to get a good experience. With the realism effect you're going for, I honestly don't think it would be worth the effort to try to get it to work on macs since they wont be able to push that quality anyway.