There is LOADS of noise, especially on moving reflections.
Path tracing tends to be pretty noisy - the temporal nature of how light propagates with current systems and noise tends to be quite organic so some people notice it less than others - with some tweaking though it is possible to massively minimise the noise below what most people will notice during gameplay though we are probably a couple of generations away from the performance at higher resolutions to make it almost invisible.
Personally I'd happily accept some noise to have ray tracing used for all lighting.