Has there been any talk about there being stages that are more taxing than others? Seems like when I get matches in the Fire Garden it's not unusual for the game to drag a few frames. I don't think I'm having any local issues, but wonder if other people are on the performance line and when they land on that stage it drags a bit. It's happened enough times on that stage that I got my question marks going.
It's pretty common for fighting games on PC for some stages to work better than others. Benchmarks should be worst case scenario, but that may be hard to guarantee and may not be the same for every system. I know in IJ2 I was struggling to run it properly and had to dial down lots of stuff. The benchmark might score me differently depending on how the action played out and once I finally found something reliable for the benchmark, I started finding stages and even areas of specific stages that would cause slowdowns. After adjusting things down again, I would find other players with green FPS dragging in those same spots.
It's harder for me to tell with MK11 because I'm not fence riding that performance line like I was. It's not too hard to dodge all these strange people that are ok playing with red and yellow FPS ratings, but you can't avoid someone that may have just barely been able to get their green rating. I'm not sure I want to fight on the stage anymore, even though it's super cool to look at.