Hi sjesse, we have a couple of AppStacks applied aswell as some base applications, Office 2016(365), Adobe Reader, Dymo Label,Chrome, frameworks, redists.
After disconnecting all the appstacks we couldn't reproduce the issue(i'm feeling clumsy..). We realized that the Dynamics 365 Outlook add in appstack was causing the issue. We're gonna re-provision it and see if the issue persists.
I wonder if there's any specific rule of thumb to what belongs in an AppStack and what doesn't. Device drivers etc.