anything over 60 fps i cant tell the difference on. They are using the crutch of anything under 100 fps is making them die because of skill issues
I've got a friend who's been playing FPS games for decades. A few years ago he was tight on budget so we built him a cheap system of used parts, i7-4670 and GTX 970 plus a 1080p 60Hz monitor. It seemed to work well and he explained his poor performance by his age and Russian hackers. Some time later he managed to get a used GTX 1080 for "buddy price" and also got a 1440p 144Hz monitor. That improved his playing by a margin. Then it became obvious that the old parts of his rig were bottlenecking so a few years ago we rebuilt the system to feature an i7-10700 which further improved his reaction speed. As he put it, it was not about frame rates per se as they didn't change. Input lag might be the closest guess as he said that he seemed to see the enemy a tad earlier than before. So apparently it's not about the base clock speed alone, it's also about how fast the calculations of the CPU reach and go through the GPU to the monitor.
There's studies that claim that the human eye can't see any difference past 60 fps. A few decades ago similar researches put the limit to 30 fps. I wouldn't be surprised if AKIron's grandsons could see 100 fps or more.
And the reaction speed of young gamers is incredible indeed. They don't seem to look at games as simulations of real life, instead they may look at changes in a bunch of pixels and react accordingly. Some 15+ years ago the godson of my wife tried AH at the tender age of 14 or so. He had been playing computer games since early childhood, practicing platform games with his friends to get the rhythm right to be able to bounce through tunnels and over obstacles. He
got bored of AH in a year after having learned the mechanics. For him it wasn't about history or aerodynamics, it was just about learning how to manipulate the joystick in a manner that would bring the enemy to his crosshair. No thinking about the accuracy of flight modeling or need for immersion, just learning how to move the objects in this particular game with the controllers he had. Compare that to us who'd like to see the most life-like views and use historically accurate controllers for immersion.