6bit + FRC = 8 bit = 4 repeating pattern frames to get extra 2 bit color data
6bit + Hi-FRC = 10 bit = 8 repeating pattern frames to get extra 4 bit color data
At 60hz Hi-FRC very noticable, eye got strain, thats why manufactures increase framerate upto 120+hz to smooth effect. The question is: manufactures present 120hz as good for games and eyes, but can they "mask" false 8 frames?
At 120hz panel you get only 120/8 = 15 real frames, all others are "flickers"
At 144hz panel you get 144/8 = 18 real frames
Here is Hi-FRC monitor review:
"I worked on a laptop for about five years and had no problems with my eyes at all. My vision has always been very good, a little sharper in the distance. And so I wanted to buy myself a larger screen to make working with the code more comfortable. My choice fell on the Lg 27Ul850-W monitor, since it has Type-C for my MacBook. At first, I didn’t feel any discomfort while working, fatigue in my eyes began to appear after two weeks, but since I didn’t experience any problems with my eyes at all, I didn’t understand what was happening at all and chalked it up to general fatigue.
As a result, after two months of torment with settings, different calibrations, nothing changed, my eyes began to hurt wildly. What I have now: I can’t look at any screen at all, my eyes burn, my head hurts, etc. I can read the news for no more than five minutes. I went to the ophthalmologist and threw out a 10 for an examination. A diagnosis of accommodation was made and glasses were prescribed for unloading near vision; the glasses also have a blue filter. I tried to sit at this monitor with glasses on, the situation did not change, although the glasses really take off the load in close proximity and it became noticeably noticeable on the laptop. As a result, I switched back to my laptop, my eyes began to recover, and Irifrin was also prescribed for a month.
I just can’t understand what’s wrong with this monitor, I turned down the brightness and contrast, I did a pencil test and didn’t notice the pwm, I also turned on slowmo at 250 fps on the iPhone, I also can’t see the pwm, in short, it’s some kind of fantasy. My wife thought that I just had sensitive eyes, she worked on it for a week and in the end her eyes also hurt. In general, I do not recommend this model. After all this, I was generally disappointed in monitors from LG."
