Hi there!
After installing the latest version of ESET smart security 9 (v9.0.375.0) i have seen a huge difference to my ssd performance! To be more specific with eset enabled the samsung magician gave me 410Mb/s sequential read. If i pause the protection and redo the test i've got a 551Mb/s. This is 140Mb/s degradation when eset is enabled.
The same goes on with CrystalDIsk , 120-130Mb/sec degradation :/
I have seen that some eset moderators are saying that its a windows fault or samsung magician fault but are they pretty sure about it?