During our test we noticed that httpclient.socket.http.cps could correctly limit the bandwidth while httpclient.socket.https.cps had absolutely no effect on the bytes transfer rate.

By looking at the sources it appears that HC4TrustAllSSLSocketFactory that is the parent class of SlowHC4SSLSocketFactory does not use the argument "factory" passed to the constructor

protected HC4TrustAllSSLSocketFactory(javax.net.ssl.SSLSocketFactory factory) throws GeneralSecurityException {
        super(TRUSTALL, SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
        this.factory = new HttpSSLProtocolSocketFactory((JsseSSLManager)JsseSSLManager.getInstance());
    }

http://svn.apache.org/repos/asf/jmeter/trunk/src/protocol/http/org/apache/jmeter/protocol/http/util/SlowHC4SSLSocketFactory.java
http://svn.apache.org/repos/asf/jmeter/trunk/src/protocol/http/org/apache/jmeter/protocol/http/util/HC4TrustAllSSLSocketFactory.java

Please modify the instantiation to allow the CPS parameter to be passed to the HttpSSLProtocolSocketFactory