diff --git a/package.json b/package.json
--- a/package.json
+++ b/package.json
@@ -14,6 +14,7 @@
     "@types/async": "^3.2.20",
     "@types/d3": "^7.4.0",
     "@types/debug": "^4.1.7",
+    "@types/fpsmeter": "^0.3.31",
     "@types/n3": "^1.10.4",
     "@types/node": "^20.2.0",
     "@types/reconnectingwebsocket": "^1.0.7",
@@ -21,6 +22,7 @@
     "async": "^3.2.4",
     "d3": "^7.8.4",
     "debug": "^4.3.4",
+    "fpsmeter": "^0.3.1",
     "knockout": "^3.5.1",
     "lit": "^2.7.4",
     "n3": "^1.16.4",