Windows 10 Task Manager reported Disk Usage

[Dexterous]

While playing Deus Ex: Mankind Divided this happened (fantastic game btw). This was as the game was loading the next level. This is on my desktop running windows 10: I have a 250GB Samsung 840 EVO Sata SSD as my OS drive and the game is on a 250GB Samsung 850 EVO Sata SSD. I have samsung's rapid mode enabled for my OS drive in samsung magician. I am wondering if anyone can shed some light as to why the disk usage reported in task manager is so high? Is it the way it is calculated somehow?

 

Only 4% Total usage but apparently 70GB/s just from the game!! Seems legit seeing as it is a standard sata drive. Samsung Magician reports that with rapid mode enabled I get reads of approx 7GB/s and writes of approx 6.2GB/s on my OS drive.

 

See image:

[GoodBytes]

Disable Rapid mode. Beside in benchmarks, there is no performance increase.