Snip & Sketch becomes unresponsive in Windows 10

Hello! Thank you for the wonderful program. I have been using Ditto for a long time, and I just found your program yesterday. It is much better than Ditto for my use. However, I found one bug that is causing a great inconvenience, which I describe below.

I use Windows 10 21H1. By default, Snip & Sketch saves any changes made automatically to the system clipboard. I use it with a pen for providing feedback to students in my courses and found the automatic copy feature convenient. However, if I make too many changes (about 5 strokes of handwriting) on a clip, CopyQ stops accepting new images to its clipboard, and the menu of Snip & Sketch stops responding. As a result, I cannot change a pen to an eraser, for example. After waiting a minute or two, Snip & Sketch becomes responsive. The log file confirms that accessing the imageData takes a long time: 60 ~ 90 seconds.

I tried to ignore Snip & Sketch in CopyQ using Command. It works as intended by not storing images from Snip & Sketch at the beginning. However, after many changes made in the clip, Snip & Sketch still freezes and CopyQ exhibits the same behavior.

I am fine with not storing the images in Snip & Sketch to CopyQ, but it is very inconvenient that Snip & Sketch freezes. (Ditto also had a similar problem, but Snip and Sketch was responsive once I made Ditto ignore Snip & Sketch.)

**How to reproduce:**
1. Clip the screen by pressing Win + Shift + S.
2. Open the clip in the Action Center.
3. Using the mouse, draw a line on the clip.
4. Each time you make a change on the clip, Snip & Sketch copies the changed image to the clipboard. You can see the copy icon in the menu of Snip & Sketch changes to the checkmark.
5. After drawing lines multiple times, the copy icon of Snip & Sketch does not change to the checkmark. At this point, the menu is not responsive. I cannot change to a different pen.
6. As soon as I quit CopyQ, Snip & Sketch becomes responsive.