FreeSync vs blur reduction (you usually pick one)
Also searched as: freesync vrb conflict · vrr vs blur reduction · freesync ulmb · freesync greyed out
What it means
On most gaming monitors a variable refresh rate (FreeSync or G-Sync) and a blur-reduction strobing mode (VRB, ULMB, MBR, DyAc) can't run at the same time — switch one on and the other greys out in the monitor's menu.
More detail
It isn't a bug and nothing is broken: the two work in opposite ways. VRR keeps the refresh rate matched to your frame rate to kill tearing and stutter; blur reduction strobes the backlight at a fixed rate to sharpen motion, which only works at that steady rate. …
In the Blackbook
The deeper explanation continues inside the app. The Blackbook publishes its verdicts here — the full write-ups stay in the book, on your rig, next to your own measurements.
The Compy Blackbook holds 191 graded entries like this one, judged against your hardware — and every change it does make is reversible, with the receipt to prove it.
See Compy →