hpst I will try my best to answer this. https://forums.blurbusters.com/viewtopic.php?f=10&t=5327&start=30 On Blur Busters there is an extensive list of information from 2013 till now. This quote is taken from the head guy at blur busters on this link I just posted
"Some displays have scan-converting electronics, especially when panel scanout velocity or direction diverges from cable scanout. I know that some panels are fixed-horizontal-scanrate (e.g. BenQ XL2540 240Hz and XL2735 1440p) while some panels are variable-scanrate (e.g. BenQ XL2720Z 144Hz@1080p). So that's why the XL2540 has crappy 60Hz lag, it framebuffers the slower scanning 1/60sec cable signal before the fast 1/240sec scanout.
Some displays scan in a different direction (bottom to top), or require full-framebuffer preprocessing, so they have to framebuffer the full refresh cycle before beginning to scanout. RTINGS found a few HDTVs that scanned bottom-to-top. Additionally I know all DLP projectors & plasma displays split a refresh cycle into multiple subfields (although the two technologies do it very differently, each refresh cycles are still effectively split up into lower-bit-depth dithered subfields) -- so DLP/plasma mandatorily framebuffers a full refresh cycle before beginning the first subfield output.
If it is TN, the GtG lag is insignificant enough statistically (it becomes more of a visual complaint, and no longer a lag complaint -- like overshoot artifacts, like 1 pixel bright overshoot artifact at 2000 pixels/sec for imperfect 0.5ms overdrive -- still a human-visible ghosting).
Just another error margin item to pay attention to.
I believe it is a bunch of different reasons. What you are explaining to me is just your take. I have learned that everyone sees things different. What you are saying doesn't apply to me. I can't use any CCFL screen or any LED screen unless I can get the motion blur to an acceptable level. Also I think screen brightness might have some sort of effect on me to. I seem to like dim screens. I'm mainly trying to point out rules that a lot of people seem to over look that apply to every LED and CCFL. CCFL uses Phosphor which to my understanding is softer on the eyes. The head guy at Blur Busters told me that LED doesn't use phosphor on the blue part of the spectrum only the red and green. This makes it harder for a lot of people to process. CRT and plasma use phosphor which Plasma is super easy on my eyes and Sony Wega CRT is super easy on my eyes as well. I believe he said 120 LED with BFI was compared to 75 HZ CRT. Even though BFI induces flicker it's not the same as PWM flicker. Users on his site who can't use monitors with PWM seem to perform great with BFI. It is all user dependant. I think CCFL depending on the panel will draw to screen differently. It seems for me TN works better for me. Another lesson I learned was if you can use Plasma/CRT or DLP dither is not your issue. As the dither on those 3 things is way worse then LED could produce. In the one link in the other thread with the dither he gives multiple examples. He even mentions how a 165HZ IPS is the ultimate if you think flicker or dither is your main problem. TN I believe has the worst dither and I think my monitor I mentioned that works for me is 6 Bit + FRC but clearly that is not my issue. I can't use any CCFL or any LED except flicker free OLED phones. I currently use a Yotaphone 2 and used to own a Samsung S2. I'm planning on buying one of the new DC dimmed oled phones soon. I want a higher refresh rate one though. The nubia gaming phone is 90 hz dc dimmed OLED. OLED follows the same rules with motion blur as well. Just because the colors can change fast on OLED the MPRT time is slow at 60hz. Again it creates the sample and hold issues (Eye Tracking) which for me is probably my main reason for eye strain or one of them.