Your laptop is fine. It is actually more than well-equipped to handle working with vector graphics.
The issue here is with Inkscape, itself, which renders to screen quite slowly, due to a complete lack of GPU acceleration. This is especially true when working with blur and filters.
There are a few tricks for minimizing the performance impact of more complex images in Inkscape. They involve working in multiple layers, for more complex projects, working in view modes (i.e., to toggle viewing with and without filters), and disabling the view of layers not being actively worked on.
Really, this needs to be fixed in Inkscape, which can be become unbearably slow, even when working on modest projects.