DyAc is strobing, and strobing allways cause added input lag Vs the same config without strobing. Is the collateral damage of motion blur reduction in LCD.
XL2746S can strobe 182Hz with good quality, low crosstalk and decent brightness. (
Not true, edited bottom 
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But at lower frequencies with strobe is not recommended, very high crosstalk, so is better Viewsonix XG270 if main target is 100-125 FPS/Hz range Strobing-On Vsync-On )
For pure performance at maximun frequency non strobed, right XL2746S, current fastest TN still has a bit of advantage in RAW speed Vs current fastest IPS.
EDIT: Comment about XL2746S doing bad strobing performance under 182Hz is not true. Recent
Dirty Scrubz high quality DyAc+ review show in video that my grong comment was based on Firefox bug during Ufo test.