I'm investigating significant performance problems with MSIE using TLS connections. I am trying to restrict the available algorithms to isolate the problem / see if there is valid workaround. To do this, I set the SSL cipher suite preference in the Group Policy Editor on the local machine to include only 2 AES128 based algorithms (I suspect the issue is in the asymmetric encryption, this was just to test if the method was valid). However when I apply the policy and start a new MIE instance, it still uses an AES256 suite - i.e. not on on the list I specified.
Its MSIE 11 on MS Server 2012R2.
Am I missing something?