Signed extension takes very long time to load palettes

Hello

We are running an html extension on InDesign CC 2015 on mac.

I have a selfsigned extension containing of four palettes. When the user groups the palettes together and then closes them and open them again, InDesign freezes up for  about 90 seconds. Then everything starts working again. If I put the machine in debug mode, by setting PlayerDebugMode = 1 i the com.adobe.CSXS.6.plist file the problem goes away.

My plugin is a number of angular applications. Its 63 Mb and contains around 1800 files ( java script files mostly).

Is it the verification of the signed plugin that makes InDesign freeze up?

Regards

/ Pontus