so I'm playing a lot of fortnite and the engine is unreal engine 4 in that game, same as PUBG for example, for the longest time i've been using the ingame framelimiter to set 120 fps, vsync off, (monitor is asus vg248qe lightboost enabled 10% at 120 hz) but then today I was interested if there was any difference using unlimited frames ingame, and limiting to 120 with RTSS instead and got some interesting results, with ingame limiter 120 fps vsync off = frametime is never a flat line and never below 9.3 or so ms even when fps is 120, with riva limiting instead frametime line is completely flat and solid 8.3 ms frametime, mouse input also feels more responsive somehow and smoother overall, for me this was very surprising as I thought limiting frames at the engine level, especially in such a popular and modern game would be superior to 3rd party limiting ? could this be the issue that im measuring frametime with same application im using to limit the frames with, RTSS ? so its not a "true" result? it still feels better/faster input though if its not placebo, also there is a bit more tearing with riva but feels better still either way, im very insensitive to tearing and lag is more important for me, anyway would be interesting to hear some opinions on this and if anyone tested this in fortnite/pubg and what were your results? Have one final question also about what value I should limit to , should I just keep RTSS at 120 or some other value like 119 or other value (and why?) my true monitor refreshrate according to testufo site is 120.004 hz if that is important, thanks a lot for any feedback!