I've had mine for a couple months. Write speeds are either faster or the same speed as my western digital perpendicular drive depending on size file, read speeds are over twice as fast. Loads an identical game about 50% faster. No stuttering ever, dont even know what that is. So far I havent seen any degradation in performance either subjectively or in benchmarks. My OS will never see a hard drive again.

For whatever reason, pc mark 5 hard disk performance does decrease slowly over time, just like on regular hard drive, and defragging brings it back to normal, just like on hard drive. Done it twice over 2 months, and it is a repeatable 10% immediate change. (note, I will ignore posts on SSD defragmenting uselessness or the wear level boogeyman...not to mention this drive will be obsolete in a year or two anyways).