How decrease the decoding and playing time while using GStreamer

[spaul13]

I am using the GStreamer on Unity playing a video and whenever a clicking a mouse button I am switching videos. It's working perfectly fine. Each of my videos contains just one I frame (`190KB). But what I observed the fps is really low almost 15-16.

I have to achieve 60 FPS in this scenario. I saw GStreamer is not using GPU support. Is it possible to enable GPU support for GStreamer to achieve 60 FPS from 15-16 FPS? If yes, can anyone please tell me how to achieve that?
Or is there any other optimizations possible to increase the FPS, reducing the latency, might be by introducing multithreading, etc.

Any help will be highly appreciated.