That transform is really slow.
All blueprint pure nodes, since they don’t have an execution wire, are called every time you ask them a value. In your example, you are using 4 times the result of the Make Transform Node, this means that this node must be executed at least four times, since it does not cache its result. To make things worse, this happens in cascade: each time your Make Transform node is called, it relies on values computed by other blueprint pure nodes. Therefore, they must be executed as well.
So, worse than having pure blue print nodes and not caching its values, is having blueprint pure nodes using other blueprint pure nodes, that are using other blueprint pure nodes, and so on…