Super slow performance when there are lots of "a" html tags

[a-v-ebrahimi]

I am displaying an HTML, having about 200 a tags, the initial load and display of html is super slow.

When I modify IsBlockAssignableToBox function, so it does not add a tags, the performance issue is resolved ( and offcourse a tags are not rendered as links)

modifed IsBlockAssignableToBox version :

private static bool IsBlockAssignableToBox(CssBox box, CssBlock block)
        {
            bool assignable = true;
            if (block.Selectors != null)
            {
                assignable = IsBlockAssignableToBoxWithSelector(box, block);
            }
            else if (box.HtmlTag.Name.Equals("a", StringComparison.OrdinalIgnoreCase) && block.Class.Equals("a", StringComparison.OrdinalIgnoreCase)
                     // && !box.HtmlTag.HasAttribute("href")
                     )
            {
                assignable = false;
            }

            if (assignable && block.Hover)
            {
                box.HtmlContainer.AddHoverBox(box, block);
                assignable = false;
            }

            return assignable;
        }

[a-v-ebrahimi]

I found if just remark case "color", the issue resolve and performance will be good. and offcourse colors will be lost !

[a-v-ebrahimi]

If I return random color in TryGetColor, this will also boost performance, a lot.