@Jared that’s great to know! I saw on the Windows SDK on the QHY tab that there was a memory leak found in the SDK (https://www.qhyccd.com/index.php?m=content&c=index&a=show&catid=127&id=162). I don’t know enough to know how the SDK works with the ASCOM driver, but I’m wondering that could be the cause of the failure? It does appear they have a fix for it…once that is released, I’m wondering if that will solve it? I’ll keep an eye on it and download the updates as they have them…