The GlassWire Service use 700-850 MB memory: snag.gy/gb2VA.jpg
The GlassWire Client use 377 MB memory: snag.gy/Ue5OV.jpg
While the GlassWire Client is running 100% disk bandwidth and 33% CPU-Power is used: snag.gy/35FLr.jpg
The connection to the GlassWire Service is often lost: snag.gy/oT6yu.jpg
Solution
Clean your history and everything works fine. GlassWire itself use less than 80 MB memory
GlassWire-Client: snag.gy/C3lZP.jpg
GlassWire-Service: snag.gy/oDYD0.jpg