I have a dual display setup on a msi laptop running Windows 10 with a 2nd video card. The laptop built in monitor was using the onboard video card driver (Intel) while the 4k Viewsonic HDMI monitor was using the nVidia Graphics card. Photoshop was defaulting to using the primary display (laptop screen) driver which wasn't enough for liquidfy. I set my secondary display to be my primary, restarted PS and it defaulted to using the nVidia card, problem solved. Works fine now, I hope that helps.
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