Unreal bloom optimize

Hello folk, i use UnrealBloomPass for one object but the performance killed , it work with 40fps on corei7
and take 90% of gpu, is there some way to optimize it ??
thanks !

let bloomPass = new UnrealBloomPass(new THREE.Vector2(window.innerWidth, window.innerHeight), 1.5, 0.4, 0.85)
bloomPass.threshold = 0.21
bloomPass.strength = 1.2
bloomPass.radius = 0.55
bloomPass.renderToScreen = true

https://threejs.org/examples/?q=bloom#webgl_postprocessing_unreal_bloom