VisioForge.Shared.Classes.DSConnection not clear when disposed VideoCapture

My purpose of using Video Capture SDK.Net for real time preview capture card video with audio. Then play loop to another source with my another user control. When I want to change view to another custom control. I will clear all object of VideoCapture and dispose it. But In the next time of loop to show preview, Memory usage is more than first time and up scale higher and higher.

I tested VisioForge.VideoCapture.Demos.CS, I click start then stop then start then stop alternating the result is same.
Memory usage is higher than previous time.

Can you check this problem ?