Hello... I had to set up a Windows Boot Camp partition on a computer in order to be able to use it with a customer using Citrix Receiver. The performance of the Citrix Windows session is also excellent under Boot Camp. However, the constant restart for macOS / Bootcamp gets on your nuts ... So I tried the whole thing with Parallels and a Windows VM. So under Parallels a Windows VM and within this VM I then start the Citrix Receiver which shows me a Windows environment in the Citrix browser window. Logically think so far. If I now want to work under Citrix Windows, this is simply not possible. Everything stops. If I click on the Windows icon, it takes 3-4 seconds for the start menu to pop up, if I want to scroll down the app list, it takes 5-6 seconds for it to scroll down. When I click on the Excel app icon I have to wait forever until the click arrives in the Citrix Windows environment. Now you could say - yes - performance in Parallels Windows is worse than Bootcamp Windows. No! 1. The Windows under Parallels boots on this iMac (which has a very good configuration) within 10 seconds. Then Windows 10 is ready to start under Parallels. All menus work without delay. Any clicks on programs or something will react immediately, like working with a real Windows on an installed SSD. 2. I also installed Visual Studio Enterprise on this Windows within Parallels. When I start an app debugging and the Android Simulator - it all happens as under Bootcamp. Without any delay. We sometimes have really heavy app projects and we can work with Parallels Windows almost like a real Windows. Nothing jerks, nothing stalls. Not even if we start a VM with Parallels Windows and then start another (Android) VM (nested VM) under Visual Studio. It doesn't even blink. Long story. It's not because of the "bad" Parallels Windows VM performance. Significantly more power-hungry tasks do their jobs without delay. But why is the Citrix Windows browser window stuck within Parallels? Can there be any network settings? Does anyone have a tip ready?