How bad is it? Can't even do casual gaming?
Casual gaming will be fine, it's more an issue for FPSes. Going from a 4ms monitor to my 25-30ms BenQ 1080ST was, well, not really an adjustment, you just ended up walking around a corner and already dead, or having to aim narrowly in front of a moving target to register hits, or being killed seemingly with one shot, but on reviewing the killcam, realizing you'd been hit 3 times. 60ms... not sure if that'll make FPSes unplayable... looking forward to some real-life reviews.