refactor(scenegraph): use super fast hasher

src/core/scenegraph.rs

@@ -1,17 +1,19 @@
 use crate::core::client::Client;
 use crate::nodes::core::Node;
 use anyhow::Result;
+use core::hash::BuildHasherDefault;
 use dashmap::DashMap;
 use libstardustxr::scenegraph;
 use libstardustxr::scenegraph::ScenegraphError;
 use rccell::RcCell;
+use rustc_hash::FxHasher;
 use std::cell::RefCell;
 use std::rc::{Rc, Weak};
 
 #[derive(Default)]
 pub struct Scenegraph<'a> {
 	client: RefCell<Weak<Client<'a>>>,
-	nodes: DashMap<String, RcCell<Node<'a>>>,
+	nodes: DashMap<String, RcCell<Node<'a>>, BuildHasherDefault<FxHasher>>,
 }
 
 impl<'a> Scenegraph<'a> {