Why seeing wrong DPI in Visual Studio 2019, .NET 3.5?

It is showing me a DPI of 96, though the screen is at 125%.

Code:

---

        Using g = frm.CreateGraphics()
            Dim xDpi = g.DpiX
            Dim scrScale As Single = xDpi / 96.0

---

Another thing - why is there is 8 pixel difference between frm.Left and frm.PointToScreen(frm.ClientRectangle.Location).X? The forms no longer have thick walls like earlier.

Is this supposed to work?

scrX1 = frm.PointToScreen(frm.ClientRectangle.Location).X
scrY1 = frm.PointToScreen(frm.ClientRectangle.Location).Y
g.CopyFromScreen(scrX1, scrY1, 0, 0, img.Size, CopyPixelOperation.SourceCopy)

Is the last parameter unnecessary?