New Post: Big difference in Speed between version 6 and 7

I have been using Magick.net verion 6 for years.
the distort command in the code below is taken about 38 ms. on the same environment with version 7 it takes 200 to 240 ms. Did I do something wrong? do I need to change something in new version?
I use q8-Any-cpu

for test you can create a console application and use this code and switch between magick.net 6 and 7. if you use any image you can see the difference in the speed.

class Program
{
    static void Main(string[] args)
    {

        MagickReadSettings readSettings = new MagickReadSettings();
        readSettings.Format = MagickFormat.Bmp;
        readSettings.Width = 590;
        readSettings.Height = 590; 

        var image = new MagickImage(@"d:\temp\mypic.bmp", readSettings);


        double[] defaultcoordinate =
        {
            0,
            0,
            43.78,
            195.26,
            590,
            0,
            405.97,
            203.69,
            590,
            590,
            405.97,
            620.90,
            0,
            590,
            113.78,
            488.85
        }; 

        var coordinates = defaultcoordinate;

        var distortImageMethod = DistortMethod.Perspective;
        image.VirtualPixelMethod = VirtualPixelMethod.White;

        image.Distort(distortImageMethod, coordinates);

        image.Dispose();
    }

I have found a clue: even in the first versions of 7 - from version 7.0.0.1 to 7.0.0.22 - the process time of the distort with that image is around 40 ms to 70 ms and suddenly from version 7.0.0.104 it jumps to 194 - 200 ms.