eM Client is very slow on new Windows 10 laptop

I have a new msi Windows 10 laptop that is very fast but eM Client is very slow compared to my old, slow, laptop. I have checked with Task Manager and my computer is using only about 3% CPU and 5% RAM. When I delete an email (GMail) it takes between 5 and 10 seconds to display the next one on the list. Same when I just click on another email to view. Very frustrating.