It goes fulls speed for the entire time after starting out a bit slow for the first like 10 sec. Also, it works faster in exfat than in apfs. I think that gets talked about a few pages back...@MichaelRCiancio Any info regarding the Intel SOLIDIGM D5-P5336 15.36TB model? Does the 15.36TB becomes slow after a few writes? Is the Read/Write at full speed?