Low fps in Vue with Pixi project

I've created a project using Vue and PixiJS. Unfortunately the application has very low fps (between 5-20). I'm hardly rendering any graphics. FPS seems fine before calling PIXI.Application, but after instancing PIXI, the FPS goes very low.
 I'm instancing the PIXI.Application inside the created hook and on then adds it to the canvas on the mounted hook. I'm storing that PIXI.Application in a data variable inside the same component.
Any help please? I'm running out of time and this a very important project.