Known issues in the Plasma 5.6 release.
We have received many reports on problems with running Plasma on hardware with graphic cards provided by Intel. We are sorry for the inconvenience and are sorry that we are not able to provide a product which is on par on all systems. Our aim is it to have our software run well on all hardware, but we cannot prevent errors in the underlying stack. Our software was hit by surprise by the issues which are from our view regressions in the underlying driver stack as previous versions worked fine. We would have liked to provide workarounds for these issues which can only be fixed by Intel. Unfortunately we were not able to find a satisfying solution. Given that we present here a list of known workaround which can be tried by affected users.
We encourage our users who experience problems to come to forum.kde.org so that we can help with our knowledge and to help us gather more information to provide better workarounds.