--- a/plugins/mod_csi_simple.lua	Sun May 05 07:24:12 2019 +0200
+++ b/plugins/mod_csi_simple.lua	Sun May 26 15:04:16 2019 +0200
@@ -108,6 +108,10 @@
 	disable_optimizations(session);
 end);
 
+module:hook("pre-resource-unbind", function (event)
+	local session = event.session;
+	disable_optimizations(session);
+end);
 
 module:hook("c2s-ondrain", function (event)
 	local session = event.session;