High GPU memory / high GPU power / very low Util

I have been trying to train a RNN-based-model, however, when I checked my GPU, it shows what the title states. Are there any tricks and/or common mistakes that trigger this?

| 0 GeForce GTX 108… Off | 00000000:88:00.0 Off | N/A |
| 49% 57C P2 241W / 250W | 10221MiB / 11178MiB | 2% Default |

CPU Util is less than 200%. I am using dataloader with num_workers = 16.