Flickering with Google Chrome on KUbuntu 16.04

There are many flickering issues with Intel GPU and Google Chrome on Linux. I use Ubuntu 16.04 with KDE. I hide the window title bars to get the maximal usable screen space on my laptop. Chrome flickered with some web pages heavily, but only if the window title bar was hidden. I tried a few fixes from askubuntu:

https://askubuntu.com/questions/766725/annoying-flickering-in-16-04-lts-chrome

But eventually it turned out, I have to change the KWin rendering backend to XRender and the flickering stopped without disabling any GPU acceleration.