Can there be difference in imput latency while frames are at 100?

[Marty_Deslions]

Okay this is more of a general gaming question regarding FPS and imput latency for PC.

So I play this game, The Elder Scrolls Online, and I play around with the graphic settings. When I have the steam fps counter on, I can watch the fps, obviously.
Here is where it gets abit confusing. When I am in certain area's, and I have the Ambient Occlusion set to LSAO I can get 100 fps (capped). When I turn AO to none/off, I still have 100 fps, because capped. However when I look around, it feels a tiny bit more responsive when the AO is off, eventhough I get the same number of frames. Is this even possible or is it just in my head?

Like when you get 100 fps, you would always get the same imput latency right?