I thought I would post here in case others are seeing the same thing, but since I had Windows 10 version 17758.1 installed I think late last week, I have noticed it seems very slow at times - big delays like even clicking the Start icon and it takes 10 seconds for the menu to appear. Some apps will take about 5 seconds or so to actually appear and other times it is instantaneous, like the Start icon usually is. There are no apps running when this happens. So it's more of an intermittent problem that regularly appears. As another example, the latest version of Quicken for Windows - sometimes it comes up in a second, other times it can take 10 seconds before anything appears. Nothing works - no keystrokes, nothing, The lag happens about 30% - 50% of the time. And note, I have nothing really running - I just jump to this VM to run an app I need under Windows from time to time, it is mostly idle! I am running it this build on a MacBook Pro 2018, which I have had for about a month. This idly started last week. I am using Parallels latest (14.0.1), I have seen this with as much as 8 GB memory allocated and 2 CPUs (I normally run 2GB or 4GB and 2 CPUs without any speed issues). It's a very fast Intel machine, and normally Windows 10 just screams on it. When I did some looking around, I seem to get regular spikes in hard disk utilization to 100%, but no applications are running, and the data throughput according to Task Manager is very low - the top users at that moment are using say .2MB/s. I have attached a picture. So I am wondering if there is an incompatibility with the Parallels disk drivers?