Agree for Minecraft, it has definitely "lags" to an extent that there are a lot of forums discussing how to tweak the configuration to improve the performance. The lags are very disturbing and I think it has to do with memory management because it sets in after some time of playing.
It certainly fits the profile of GC stutter. I'm told it makes some bad decisions about handling objects, triggering pathological behaviour in the collector but that's second-hand info at best.
