Plasma5 freeze ramdomly.

While using Mozilla Firefox and Dolphin, Plasma 5 freeze. The only way to exit is pressing CTRL+ALT+BACKSPACE.
My system: HP Envy J108 (Intel i7) Optimus, working with intel driver.
Extended desktop with a TV.
Anyone have the same problem?
PS: No problem in GNOME, but i don’t like it. I prefer KDE.

Getting the occasional crash here. A window appears - warning of a crash and Plasma5 resets itself.

I have no warning window, i can change to terminal session, turn back to X session but Plasma still is frozen. Mmmm plasma version on Leap feels like a beta :frowning: