The monitor is thick because of the incredible back lighting, memory, ports, micro sd slots, fan or fans and needs air flow to aid in cooling
Received mine today, did newest updates and the firmware 50 is amazing, the DJI app is quick, fluid, faster than my tablet and phone with no lag and so far no heat issues
It does get warmer using the DJI app but nothing out of the ordinary so perhaps the update addressed the heat / fan issue
I will have my mount tomorrow and use it all weekend updating its performance in the sun
I have not used prior Crystalsky monitors, this one is a must have, first time I am able to see everything all the time outdoors, it makes the experience so nice now