diff --git a/resources/prefs.json b/resources/prefs.json
index b882ad9ca46c..23c42c3352da 100644
--- a/resources/prefs.json
+++ b/resources/prefs.json
@@ -42,8 +42,8 @@
   "js.ion.enabled": true,
   "js.ion.offthread_compilation.enabled": true,
   "js.ion.unsafe_eager_compilation.enabled": false,
-  "js.mem.gc.allocation_threshold_avoid_interrupt_factor": 1,
-  "js.mem.gc.allocation_threshold_factor": 1,
+  "js.mem.gc.allocation_threshold_avoid_interrupt_factor": 100,
+  "js.mem.gc.allocation_threshold_factor": 100,
   "js.mem.gc.allocation_threshold_mb": 30,
   "js.mem.gc.compacting.enabled": true,
   "js.mem.gc.decommit_threshold_mb": 32,