Today i've received this monitor, and cheking the options i've seen thishttp://i.imgur.com/aIgfFRq.jpg
I have an AMD 290 and the freesync is disabled in the drivers so, i dont know why is showing "ON" in the display information and also the current refresh rate is missing somehow. I'm coming from a 2411T 144hz and I notice kind of higher input lag on the Xl2540 maybe it's caused by the freesync always "ON" in the monitor no matter it's enabled or disabled in the AMD drivers.
But...searching in the service menu i've found this...http://i.imgur.com/tJo2vMo.jpg
Yes, blur reduction. In the normal menu settings does not appear any blur reduction toggle but as you can see in the service menu it does.
Lets try something... http://i.imgur.com/oFNcqOZ.jpg
The screen went black and a "plug" sound came, then the screen went back alive and it behaves way different (lightboost-blur reduction) and take a look at the same info than before.http://i.imgur.com/JCB4391.jpg
Now as you can see, freesync info is gone and now it show the current refresh rate.
Btw:sorry for my poor english, I tried my best hahaha.