I've been trying to use Krita's liquify tool, but it is somehow really choppy, snappy and generally not smooth. I compared it to Photoshop's Liquify and it's much smoother. Is there anything I can do about this?

Also the preview during the Liquify is very choppy and low-res, too

Any help will be appreciated!

Here is the easy tutorial on how to use the liquify tool which helps me a lot.