Thanks for the feedback . Unfortunately no luck in getting it to work.

HDMI cable is from amazon basics and rated at 18Gbps  HDMI 2.0 , tried with other cables i had lying around (xbox One ) and there is no difference. 

using  SwitchResX  does not meet minimum security guidelines to install on  a macbook pro ( as the App has no App Store account ) and is merely a binary distribution over the internet.  

Using this adaptor with a HDMI 2.0 screen for the Mac OS X El Capitan is definitely a problem ( even if the MacBookPro is capable of 4k@60 through the DP ) .