I just did a Flight from KMSP with Flightbeam KMSP and landed at FSDT KORD. I did not get one triangle until I landed at KORD and approached the gate area. Then the triangles started every 5 seconds.
That doesn't indicate KORD has a problem.
It only indicates that, on your system, KMSP (which is not a PBR scenery), is not affected by what might be a possible bug with PBR materials, which is not caused by KORD and, as confirmed in the post I linked from another user happens at other airports as well, and KORD being a full PBR scenery, is more likely to be a victim of it.
Again, LM is fully aware there are still issues in the current release of the simulator with PBR rendering, some of them we were able to bypass, but this can't, both because we cannot reproduce it in any way, but also because it's really something deep inside the engine rendering, we surely haven't put any stray triangles in the scenery and, of course, only a few users in this thread have reported it so, it's likely depending on some specific setting and/or a specific combination of hardware and settings and drivers, otherwise it would happen to anybody.
