Sorry to say, but looking at these specs and price, this is not even in the same ballpark as the image quality offered by modern flagship TVs — which you will get (and should expect in 2020) in this price and size range, and also have the ability to be used as non-smart TVs for the privacy-conscious[1].

For the same price, you can buy the latest brand new 55” OLED TV from LG, which has absolutely spectacular picture quality in every respect (including fantastic color calibration capabilities), raw pixel response times better than any “PC gaming monitor”, and even input lag (overall end-to-end latency) rivaling or beating many gaming monitors today[2]. Nothing else even comes close, aside from Sony models (also in this price range) which also use LG’s OLED panels.

So rather than hacking your Samsung or buying an inferior Dell monitor meant for PowerPoint presentations, a far better solution is to just stop buying Samsung TVs. In addition to their deceptive marketing and other issues like intentionally bad (over saturated) color calibration out of box, they are designed to be impossible to correctly calibrate due to always-on tone mapping. They do this because they think it makes their TVs look better, and they’re fighting a losing battle against OLED TVs which Samsung does not have any answer to at the moment[3]. Tone mapping that cannot be turned off is a cheap software trick that compromises the accuracy of the source material in hopes of making their TVs have a higher contrast appearance than their hardware is actually capable of (but it does cause artifacts and other downsides, even in regular streaming content).

[1] If you’re really concerned about privacy, LG’s TVs allow you to decline all the terms of service and still use them as “old fashioned TVs” with just the non-smart inputs like HDMI. I’ve tested this on my new LG C9, and it works great.

[2] Objective measurements of the LG C9 OLED series: https://www.rtings.com/tv/reviews/lg/c9-oled

[3] Samsung (and everyone else) is way behind LG’s OLED tech, until they manage to get micro-LED technology to scale up and reach affordable prices. Micro-LED will be superior even to OLED, but right now it is not a production reality, and exists only as multimillion dollar display tech demo prototypes. One other possible alternate to OLED is dual layer LCD, but I don’t think anyone is seriously pursuing that for consumer TV use due to their power and heat issues.