05/22/2020 UPDATE. The IPS 240hz monitor tier list.(I've measured/tried the all) and my honest explanation why.

[bleach]

Forii here owned both and claimed that the 25" version showed ghosting at 80 OD so he reduced it down to 60od

Mine overshot above 60 OD as well

how bad?

The pursuit I took isnt great, but it showcases just how terrible the overshoot is. 60 vs 80.

[axaro1]

how bad?

u shouldn't see overshoot at 80 OD because when i measured the VG279qm, there was very minimal overshoot(like 1-2%)

then again, maybe the 25" version just doesn't have the same overdrive tuning as the 27" version.

Forii here claimed that at 80 OD, there was overshoot so he plays at 60 OD at 240hz for the 25" version

There's some minor overshoot with OD80 at 240hz, OD60 is better at this refresh rate.
OD80 is more suited for 270/280hz, there's absolutely no overshoot at this refresh rate, you are trading refresh rate with transition% inside the window but tbh I don't notice any issue from the reported low %, I don't see any smearing.

[Chief Blur Buster]

The pursuit I took isnt great, but it showcases just how terrible the overshoot is. 60 vs 80.

<Pursuit Camera Commentary>
I want to compliment you for the correct camera exposure -- not too underexposed, not too overexposed, and dynamic range seems balanced (I can tell from the top/center/bottom having different shades of cyan). That's as important as tracking accuracy. So, kudos for doing this attempt.

Excellent histogram chart, bleach -- a histogram-chart-look normally expected for a SLR camera (despite the imperfect but very adequate tracking of handwave accuracy). Your blacks are close to the correct black level, and your whites are close to the correct white level, almost spot-on without color gamut clipping (black clipping, white clipping). Very rare I see a great histogram in smartphone end-user pursuits. I don't know if your smartphone camera was very smart (what model?), or if you actually manually histogrammed it. Either way, smartphones are getting better & smarter.

Still, your post has been selected for a "Chief Blur Busters Zoomed Photo Crop" highlight -- which I give to end user pursuits meritworthy of further analysis

Here's selected crop-zooms for obsessive-analyst people in this threads (like me!). For the second one, vertical accuracy was definitely better because I see the "scanlines" of the horizontally-blurred screendoor effect on the second photo. Both have subpixel vertical accuracy, since the two horizontal white lines don't touch each other. And for horizontal accuracy is adequate (total amount of tickmark misalignment seems to be within +/- 1 pixel approximately) according to the verifiable photographed error margin. So your camera-blur error margin (relative to accurate eyetracking pursuit / accurate camera pursuit) is reasonably small.

My biggest nitpick is excessive camera compression (compression artifacts are very visible) -- compression artifacts are the biggest error margin in your photographs.

Your zoomed + cropped Tracefree 60, 270Hz, VG259QM

forum-asus-tracefree-60.png (146.17 KiB) Viewed 80166 times

Your zoomed + cropped Tracefree 80, 270Hz, VG259QM

forum-asus-tracefree-80.png (556.21 KiB) Viewed 80166 times

I wish more smartphones would support RAW capture or ultrahigh-bandwidth video capture (overkill bitrate) for video pursuits. Auto-burst-shoot apps can also be an adequate alternative to video too, if it unlocks a less-compressed pursuit.

For more user reading, see the Pursuit Camera Forum for instructions on how a forum member can do Android & iPhone handwave pursuits.
</Pursuit Camera Commentary>

[bleach]

The pursuit I took isnt great, but it showcases just how terrible the overshoot is. 60 vs 80.

<Pursuit Camera Commentary>

Excellent histogram chart, bleach -- a histogram-chart-look normally expected for a SLR camera (despite the imperfect but very adequate tracking of handwave accuracy). Your blacks are close to the correct black level, and your whites are close to the correct white level, almost spot-on without color gamut clipping (black clipping, white clipping). Very rare I see a great histogram in smartphone end-user pursuits. I don't know if your smartphone camera was very smart (what model?), or if you actually manually histogrammed it. Either way, smartphones are getting better & smarter.

Iphone XS with fairly normal 1080p60fps video settings, selected best looking histogram stills from the video footage. I only took 4 videos, selected the 2 best looking ones.

EDIT yet again: these were taken at 270Hz refresh.

[Spacepotato87]

So blur,

I got xl2746s and even without dyac+ it's not that blur

[bleach]

So blur,

I got xl2746s and even without dyac+ it's not that blur

The video is really compressed, so the quality makes the ufo look blurrier than it does in reality. If I took the video with an actual camera even if I only did the pursuit by hand, it wouldn't have as bad artifacts. What you should be looking at instead of the ufo centre, you should look at the leftmost edges of the ufo to see motion blur instead of compression artifacts.

[RLCSContender*]

wow bleach, that 80 overdrive overshoot on the vg259qm looks like 20-25% overshoot which is still playable but extremely distracting

when i had the VG279qm, there was basically no overshoot(i measured 1.5%) at 80 OD @ 240hz. Forii has confirmed this because he has owned both of them. I guess what you showed on those UFO tests confirmed what Forii also knew, that the 25" version doesn't have the same OD tuning as the 27" version.

then again, the 25" version might have a more aggressive overdrive tuning at 60 OD because Forii did a UFO camera motion test and it looked pretty good @60 OD on 240hz

Still, at 60 OD, that's in the range of the 1440p nano panels which is still fast.

Here's my 2 cents on the asus models. I don't think response times are that important at very high refresh rates anyway because the extra MPRT @ 280hz still makes it the fastest monitor in the world right So if the measurements are consistent to that of the 27" version, that would mean that the response times is slightly not fast enough for 4.17ms pixel response time you need to avoid pixel smearing.

in practice, it's basically invisible to me at 240hz anyway.

here is the asus vg259qm(60 OD) vs the acer predator xb253q g (normal OD) UFO test (credits to forii)



and here's the MSI MAG251rx UFO test(Fastest OD)

[RLCSContender*]

^
^
on those UFO tests, just by looking at it, you can see the very subtle 5-6% overshoot on the MSI, but there is obviously less motion blur because the MSI is the 3rd fastest IPS monitor behind the Asus and the Alienware that i've measured.

so if the vg259qm was at 240hz, the MSI is faster. the thing is though, at 280hz the vg259qm/vg279qm is faster. , pixel response times really doesn't matter that much becuase the extra refresh rate increases motion clarity(MPRT) and reduces in put lag, and you are able to see more frames(+40Hz frame advantage) which STILL makes the asus vg27q9m/vg259qm faster than the MSI and any TN monitor. If you are a casual gamer, u probably won't see much, but as soemone who is in the top 500 in rocket league, i REALLy did see a good performance advantage @280hz compared to 240hz, and yes 95% of ppl in the very high ranks use TN but i was able to react way faster than them just for the fact that i had a 40hz frame advantage. I was able to win more 50/50 challenges and i was able to see more especially if the ball is in motion and ESPECIALLY WHEN I MOVE MY CAMERA. Again, it's not a gamechanger for casual gamers, but if you are ELITE at a video game, ANY edge in performance will matter.

The only three 240hz IPS monitors that i've measured that can legitimately stand toe to toe with the fastest TN is the 240hz MSI, 240hz alienware(esp. the 25" version), and the 280hz Asus(especially the asus of its +40hz frame advantage)

[axaro1]

i REALLy did see a good performance advantage @280hz compared to 240hz, and yes 95% of ppl in the very high ranks use TN but i was able to react way faster than them just for the fact that i had a 40hz frame advantage. I was able to win more 50/50 challenges and i was able to see more especially if the ball is in motion and ESPECIALLY WHEN I MOVE MY CAMERA. Again, it's not a gamechanger for casual gamers, but if you are ELITE at a video game, ANY edge in performance will matter.

I played at 240hz this entire week to test if the increase in refresh rate% inside the window was worth the -40hz.
I mostly tested OD80 and OD60, OD80's overshoot leaves a white trail which is slightly noticeable only in dark scenes.

Yesterday I switched back to 280hz OD80 and the +40hz increase is much more noticeable than I thought the first time I bought this monitor, it does definitely feel more responsive.

Tim from Hardware Unboxed said that OD40 somehow performs better than OD60 on the VG279QM but there's barely any difference at both 280 and 240hz on the VG259QM, the only way I was able to notice any difference was by recording at 480fps and cyclically swapping between OD60 and OD40.

OD60 looks slightly better, but it's hard to notice even at 480fps and there's absolutely no difference , I do believe that the theory about the VG259QM having a different overdrive tuning compared to the 27" may be true.

I think that OD80 on the 27" is less aggressive than on the VG259QM (with the 24.5" there's some very minor overshoot at 280hz, which is similar to MAG's faster mode at 240hz in the Hardware Unboxed review and different from this VG279QM review [https://www.aperturegrille.com/reviews/ASUSVG279QM/] from a5hon which shows absolutely NO OVERSHOOT at 280hz OD80).

This is most likely the reason why OD80 doesn't have as much overshoot at both 280 and 240hz on the VG279QM.

OD80 on the VG259QM is more aggressive, it looks like 3-5% overshoot at 280hz and probably 10-12% at 240hz, that's why many VG259QM owners report that OD60 is perfect at 240hz, it seems like every overdrive on the 24.5" was boosted compared to the 27", causing OD60 to be more consistent at 240hz and even making it viable at 280hz even tho I don't mind OD80's minor overshoot at 280hz, the ufo/frog image is slightly better.

TL:DR
Best overdrives for each monitor and refresh rate:
VG279QM
- 240hz OD80
- 280hz OD80
VG259QM
- 240hz OD60
- 280hz OD80

[axaro1]

i REALLy did see a good performance advantage @280hz compared to 240hz, and yes 95% of ppl in the very high ranks use TN but i was able to react way faster than them just for the fact that i had a 40hz frame advantage. I was able to win more 50/50 challenges and i was able to see more especially if the ball is in motion and ESPECIALLY WHEN I MOVE MY CAMERA. Again, it's not a gamechanger for casual gamers, but if you are ELITE at a video game, ANY edge in performance will matter.

I played at 240hz this entire week to test if the increase in refresh rate% inside the window was worth the -40hz.
I mostly tested OD80 and OD60, OD80's overshoot leaves a white trail which is slightly noticeable only in dark scenes.

Yesterday I switched back to 280hz OD80 and the +40hz increase is much more noticeable than I thought the first time I bought this monitor, it does definitely feel more responsive.

Tim from Hardware Unboxed said that OD40 somehow performs better than OD60 on the VG279QM but there's barely any difference at both 280 and 240hz on the VG259QM, the only way I was able to notice any difference was by recording at 480fps and cyclically swapping between OD60 and OD40.

OD60 looks slightly better, but it's hard to notice even at 480fps and there's absolutely no difference , I do believe that the theory about the VG259QM having a different overdrive tuning compared to the 27" may be true.

I think that OD80 on the 27" is less aggressive than on the VG259QM (with the 24.5" there's some very minor overshoot at 280hz, which is similar to MAG's faster mode at 240hz in the Hardware Unboxed review and different from this VG279QM review [https://www.aperturegrille.com/reviews/ASUSVG279QM/] from a5hon which shows absolutely NO OVERSHOOT at 280hz OD80).

This is most likely the reason why OD80 doesn't have as much overshoot at both 280 and 240hz on the VG279QM.

OD80 on the VG259QM is more aggressive, it looks like 3-5% overshoot at 280hz and probably 10-12% at 240hz, that's why many VG259QM owners report that OD60 is perfect at 240hz, it seems like every overdrive on the 24.5" was boosted compared to the 27", causing OD60 to be more consistent at 240hz.

I don't mind OD80's minor overshoot at 280hz, the ufo/frog image is slightly better.

TL:DR
Best overdrives for each monitor and refresh rate:
VG279QM
- 240hz OD80
- 280hz OD80
VG259QM
- 240hz OD60
- 280hz OD80