In our consensus algorithm, an event containing transactions is represented by a vertex in a DAG, and edges represent the relationships between the events. (docs.soniclabs.com/technology/consensus)
Sui utilizes a DAG in it’s network architecture offering greater efficiency and performance for applications downstream. (blog.sui.io/all-about-directed-acyclic-graphs)
In our design though, since all validation/consensus happens client-side, I would not expect stellar transaction speeds. Although Native Token could be validated by nodes as @dirvine once suggested, so faster and more secure.