it is a problem. its not a pc specific problem. just because console folks are accustomed to laggy gameplay (sorry but it is true), it does not mean its not there
i've used a ps4 for a year. all 30 fps games were horribly vsync'ed and had horrible input lag. games i've experienced with heavy input lag were: horizon zero dawn, rdr 2, god of war, spiderman. practically most prominent ps4 titles at that time
i dont even need to prove my point. DF covers me;
spiderman's 30 fps mode has an input lag of 117.5 ms at 30 fps/60 hz. let's see how it compares to witcher 3 on PC
so 133 vs 117. not so big of a difference now, is it?
how about 60 fps, then? 60 fps spiderman has an input lag of 75 ms at 60 hz on ps5 according to DF.
60 fps witcher 3 has an input lag of 72 ms at 60 hz on PC
important note here is that capframex also calculates end to end latency (mouse, screen, rendering latency, all of them. just like DF).
numbers
align and they speak for themselves. at least for spiderman, ps5 has the usual heavy VSYNC input lag we exhibit on witcher 3. though, i'm prettty sure spiderman is not an exception either.
this is what VSYNC stands for. it adds input lag. there's no two ways about it. it is a limitation of the technology itself.
i hope they can also do new tests with vrr modes and then we may get an answer. this concludes my experiences