WPF BlurEffect Sluggish Performance and FPS -

in code have multiple blureffects applied multiple borders code similar following in onrender method:

        var blureffect = new blureffect();         blureffect.radius = 5;         blureffect.renderingbias = renderingbias.performance;         blureffect.kerneltype = kerneltype.gaussian;         blureffect.freeze();          mainborder.effect = blureffect; 

however, when apply kind of effects multiple elements have noticed sluggish performance , drop of fps under 50. adding more borders effects makes worse.

are there performance tricks can or alternative drawing method can use same blur effect on border, better performance?