Poor contrast ratio. Only 1000:1. No better than TN panel. Also, very expensive for the poor stats it has.
IF i'd be on the market for 27", 2K, 240Hz monitor, i'd get Samsung Odyssey G7 LC27G75T.
Which has far better contrast ratio (2500:1) thanks to VA panel, is curved (better immersion in games) and is easy 100 bucks cheaper than that Viewsonic unit;
amazon: https://www.amazon.com/dp/B088HJ4VQK