So I ran an endurance test for my CS1311 PNY 120 GB SSD using Anvils Storage Utilities, when the test first started, my SSD has a write speed if about 140 MBPS which is slower than the 510 MBPS advertised. After about 500 files created, it starts to slow down drastically. It slows down to the point if having only 46 MBPS write speed. (Also the files created per run is 20 so reaching 500 files takes about 1 min only) is this a faulty SSD or is it something else? My SSD is 65% filled.