Launch BETA Photoshop While Pressing The Keyboard Shortcut With Photoshop closed, press and hold Shift+Ctrl+Alt (Win) / Shift+Command+Option (Mac) on your keyboard and then Launch Photoshop the way you normally would. https://helpx.adobe.com/photoshop/using/preferences.html#Manually
2. It may help if we could see your Photoshop beta System Info. Launch Photoshop beta, and select Help >System Info...and copy/paste the text in a reply.
I've tried on human shapes, abstract and organic shapes. Perhaps not quite so good with organic, but doing an exclent jon with people and regular shapes like buildings, cars etc.