diff --git a/changelog.d/1722-cables-batched-primitives.md b/changelog.d/1722-cables-batched-primitives.md
new file mode 100644
index 000000000..bed69b885
--- /dev/null
+++ b/changelog.d/1722-cables-batched-primitives.md
@@ -0,0 +1,4 @@
+- Submarine cables draw from a few batched primitives instead of thousands of
+  entities. Switching the layer off and back on, and zooming with it on, no
+  longer stall the page, and it holds about 900 MB less memory. Double-click
+  no longer starts Cesium's entity tracking on a cable (mazy1998, #1722).