iMac graphics issues

Hi,
I recent got a new 27" iMac with a Radeon Pro 570 graphics card and I loaded up Civ6. I've been playing on my PC for many months but wanted to see how it would work on the more powerful iMac with the Retina display.
But I keep having graphical glitches. I've had issues with city tiles and goody huts not appearing. They are hidden. Possibly other issues as well. I had it working for a little while but now it's happening again.

I've tried disabling all mods and adjusting many of the graphics options and no success.

Has anyone else had this problem? Are there recommended graphic settings for iMacs?

Thanks,
FYF

 

Disabling mods may not be enough. You have to remove them to be sure. Game runs perfectly on my 2014 27" iMac at 2560X1440 with no mods.

 

Exactly. Specifically, I had Tribal Villages and Barbarian Camps not appearing - the Barbarian units appeared, but not their camps and the audible signal that a camp/village had appeared was there, just no graphic. I found I had to remove all Mods and then, one by one, re-install them to find out what was messing up.
In my case, it turned out that a combination of Modded Civs and Alternate Leaders was the culprit - which surprised me, because I thought for sure it would be one of the graphic Mods I was using...

 

That seems to have worked. Thanks a lot!
Now to sort out which one was the problem.

 

You're welcome.
If it's any help, I found that all of Sukritect's Civilizations, Wonders, and Alternate Leaders were fine, but that most of the other Modded Civs would result in some kind of loading or graphics problem. I use several other 'new' Wonders, and none of them were a problem.