PS Beta with no record of my usage, tools are lagging, not moving smoothly. Photos corrupted.

I was Working in layers and making changes with the remove tool and the clone stamp tool  & masking , suddenly the image split like an old tv fault,  bands across the image pixelation and missing strips (vertical bands no pixels). the tools were lagging, slow &  jittery right be for the file split.

closed with out saving, opened the origional image again same issue. file corrupted. I updated beta the issue has not re-occured. The interface however has its is brand new, filled with help menus and some sort of game-ified learning progression that is marking my progress. I find that to be annoying and offensive, it would be better I think  to have it available instead as a resource, perhaps a help menu. The tutorials and the people providing them are great clear easy to follow accurate and helpful. Aaron Nace from 2011 to today I thank you !