diff --git a/modules/rnetwork/components/folk-graph-viewer.ts b/modules/rnetwork/components/folk-graph-viewer.ts
index a5c12a3..85ab17b 100644
--- a/modules/rnetwork/components/folk-graph-viewer.ts
+++ b/modules/rnetwork/components/folk-graph-viewer.ts
@@ -983,6 +983,15 @@ class FolkGraphViewer extends HTMLElement {
 					return link.type === "delegates_to" ? 0.15 : 0;
 				})
 				.linkCurveRotation("rotation")
+				.linkVisibility((link: any) => {
+					// Hide links whose endpoints haven't been positioned yet
+					// (prevents TubeGeometry NaN errors during force warmup)
+					const s = link.source, t = link.target;
+					if (!s || !t) return false;
+					const sx = typeof s === "object" ? s.x : undefined;
+					const tx = typeof t === "object" ? t.x : undefined;
+					return sx != null && !isNaN(sx) && tx != null && !isNaN(tx);
+				})
 				.linkOpacity(0.6)
 				.linkDirectionalArrowLength((link: GraphEdge) => {
 					if (link.type === "cross_layer_flow") return 3;
@@ -1040,7 +1049,7 @@ class FolkGraphViewer extends HTMLElement {
 				})
 				.d3AlphaDecay(0.02)
 				.d3VelocityDecay(0.3)
-				.warmupTicks(50)
+				.warmupTicks(100)
 				.cooldownTicks(150);
 
 			this.graph = graph;