Compiling from the bottom one up until I am at the uppest one mostly works, but it can take like 3 or 4 minutes because I have really huge BPs with many many childs and references, one compile of one BP can take between 10-20 seconds sometimes and there are a lot of BPs turning dirty, also non-UMG ones, so I have to recompile all of them. Then sometimes childs get dirty again after I compile a parent and so on. But after 5 minutes of compiling everything I mostly get a clean state everywhere, just in what happened today nothing helped and I had to delete the widget and so on.