diff --git a/src/core/PlayArea.ttslua b/src/core/PlayArea.ttslua
index 644763f3..3da4afec 100644
--- a/src/core/PlayArea.ttslua
+++ b/src/core/PlayArea.ttslua
@@ -26,7 +26,6 @@ local SHIFT_EXCLUSION = {
 local tokenManager = require("core/token/TokenManager")
 local INVESTIGATOR_COUNTER_GUID = "f182ee"
 local PLAY_AREA_ZONE_GUID = "a2f932"
-local lastCollisionObject
 local currentScenario
 
 ---------------------------------------------------------
@@ -64,12 +63,10 @@ end
 
 function onCollisionEnter(collision_info)
   local obj = collision_info.collision_object
-
-  -- only trigger the following once every 0.1s for each object
-  -- (otherwise TTS fires this event 20 times and that causes 20 JSON decodes)
-  if not COLLISION_ENABLED or lastCollisionObject == obj then return end
-  lastCollisionObject = obj
-  Wait.time(function() lastCollisionObject = nil end, 0.1)
+  local objType = obj.name
+  
+  -- only continue for cards
+  if not COLLISION_ENABLED or (objType ~= "Card" and objType ~= "CardCustom") then return end
 
   -- check if we should spawn clues here and do so according to playercount
   if shouldSpawnTokens(obj) then