I had a similar problem with styles in my application. If you do not see the whole xaml file of the user interface, I would ask if you are using any Bitmap effects, as this will cause problems with increased processor performance. If so, I recommend not using them and instead use optimized effect parameters or use the shader library support in WPF to apply any effects you are looking for.
In my example, I had an element with the effect of a raster shadow, which was able to switch it to a shadow effect that received the desired effect, and the processor was not affected. When I had a bitmap effect, it actually redrawn the entire area of the rectangle in which the effect was turned on, so when I had a blinking cursor, it would redraw every child control from the parent in which the bitmap effect was applied.
If you are not using any effects, I recommend looking at your visual tree and see if it’s difficult with the user interface elements or, finally, and perhaps the most look, check your triggers and / or events that you may , identified for the excessive state of the displayed type of hyperlink may be something like that that causes some problems.