0.6ms difference of input lag

[samartian]

is 0.6ms really noticable?

one's IPS with +0.6ms
and the other one is the VG248QE (which I understand is an old model that people are trying to avoid)


but from what I hear overall the VG248QE is the best performer in terms of input lag and competitive fps?

[Chief Blur Buster]

Hello,

Yes and no.

The answer is more complex than that....
See The Amazing Human Visible Feats Of The Millisecond

[samartian]

Hello,

Yes and no.

The answer is more complex than that....
See The Amazing Human Visible Feats Of The Millisecond

well judging by what I just read there, and me being an eSports player for over 15 years (not to brag or anything) with what I believe to be relatively lower response time than the average person, I feel that I should opt for minimizing the whole tech-side latency, so I just ordered the VG248QE.

I really dug the web over this question, and from the very limited **current** supply of displays we have here right now, this is really my best option.

can anybody help me calibrate the monitor to minimize lag and have good motion quality? (not gonna strobe or anything)
I read that 144hz with TF=60/80 is my best bet?
or is there something additional that I can set ?

[Chief Blur Buster]

The VG248QE is old but relatively cheap, so it's a good starter option. 240Hz availability is tough in some countries.

Refresh rate is more important than 1ms of extra latency for many esports. The reduced sampling/scanout latency can sometimes outweigh absolute latency. A 240Hz display can refresh in 1/240sec even at 144fps. See High Speed Video of LCD Refreshing.

For example, the first 25ms of refresh cycles, the sampling (scanout completion) lantency:

120Hz: T+0ms, 8ms, 16ms, 24ms
240Hz: T+0ms, 4ms, 8ms, 12ms, 16ms 20ms, 24ms

Now if you add 1ms absolute latency (tape delay) to the 240Hz monitor:

120Hz: T+0ms, 8ms, 16ms, 24ms
240Hz: T+1ms, 5ms, 9ms, 13ms, 17ms 21ms, 25ms

You notice that the extra samples of extra refresh cycles (5ms, 13ms, 21ms) is still less than the 120Hz monitor of 8ms, 16ms, 24ms. Latency is not a single number.

In addition, 240Hz has half the motion blur of 120Hz, since doubling refresh rate halves scrolling motion blur. This is great for things like web browser scrolling and such.

All things equal (GtG lag + processing lag):
144fps at 240Hz has less tearing than 144fps at 144Hz.
144fps at 240Hz has less lag than 144fps at 144Hz

However, a cheap 240Hz monitor can have worse ghosting than a very good 144Hz monitor, so there's an element of panel quality that can make 240hz worse. However, most will get better esports with 240Hz+. On the other hand, I understand availability/price options are often extremely limited and going with 144Hz is easier/more affordable in many countries.

[samartian]

thought I should just post my edit as a new comment for you to see Chief,


.. I just found out some posts by this guy "Falkentyne" who mentions an OD GAIN trick in the service menu for further ghosting reduction, I just do not understand if its supposed to work when monitor is set to 144Hz non strobed..

is it something people do only when using the lightboost @120Hz? (changing the OD from 0F to 0C)

I just wanted to use PCMONITOR.INFO settings (theater mode calibration) @144hz.. (prefer 144 non strobed than 120 strobed for CS)


and to address your latest comment, the thing is not particularly the "availability in some countries" , its only due to CORONA, and I choose to go 144 (for now) because I have a pretty weak PC (temporarily).. and just waiting for parts to come in stock for me to purchase.

[Chief Blur Buster]

its only due to CORONA

Disambiguation:
Corona (noun) -- referring to coronavirus aka COVID-19 (also known as SARS-CoV-2)
Corona (noun) -- referring to an excess display overdrive artifact of photographic-negative ghosts behind images.

Both true on both counts. Some cheap 240Hz monitors have more corona-artifacts at low frame rates, but doesn't affect good/recent 240Hz monitors, especially those G-SYNC native or G-SYNC compatible certified (especially of the newer Fast IPS variety, which I love).

[Chief Blur Buster]

.. I just found out some posts by this guy "Falkentyne" who mentions an OD GAIN trick in the service menu for further ghosting reduction, I just do not understand if its supposed to work when monitor is set to 144Hz non strobed..

OD GAIN affects non-strobed overdrive, see LCD Overdrive Artifacts.

OD GAIN is just simply like a 100-level Overdrive Adjustment, where you can adjust Overdrive in finer amounts than simply Overdrive ON/OFF or Overdrive Low/Medium/High/Extreme.

[samartian]

.. I just found out some posts by this guy "Falkentyne" who mentions an OD GAIN trick in the service menu for further ghosting reduction, I just do not understand if its supposed to work when monitor is set to 144Hz non strobed..

OD GAIN affects non-strobed overdrive, see LCD Overdrive Artifacts.

OD GAIN is just simply like a 100-level Overdrive Adjustment, where you can adjust Overdrive in finer amounts than simply Overdrive ON/OFF or Overdrive Low/Medium/High/Extreme.

thank you very much once again Chief, will try that as soon as the unit arrives and I'll get the chance to test it and play around with the settings.

One last thing though, from what I understand OD GAIN doesnt add input lag, because its the equivalent of TF/AMA/any osd Overdrive setting right?

[samartian]

its only due to CORONA

Disambiguation:
Corona (noun) -- referring to coronavirus aka COVID-19 (also known as SARS-CoV-2)
Corona (noun) -- referring to an excess display overdrive artifact of photographic-negative ghosts behind images.

Both true on both counts. Some cheap 240Hz monitors have more corona-artifacts at low frame rates, but doesn't affect good/recent 240Hz monitors, especially those G-SYNC native or G-SYNC compatible certified (especially of the newer Fast IPS variety, which I love).

Haha, I actually meant COVID and not corona artifacts

[samartian]

The VG248QE is old but relatively cheap, so it's a good starter option. 240Hz availability is tough in some countries.

Refresh rate is more important than 1ms of extra latency for many esports. The reduced sampling/scanout latency can sometimes outweigh absolute latency. A 240Hz display can refresh in 1/240sec even at 144fps. See High Speed Video of LCD Refreshing.

For example, the first 25ms of refresh cycles, the sampling (scanout completion) lantency:

120Hz: T+0ms, 8ms, 16ms, 24ms
240Hz: T+0ms, 4ms, 8ms, 12ms, 16ms 20ms, 24ms

Now if you add 1ms absolute latency (tape delay) to the 240Hz monitor:

120Hz: T+0ms, 8ms, 16ms, 24ms
240Hz: T+1ms, 5ms, 9ms, 13ms, 17ms 21ms, 25ms

You notice that the extra samples of extra refresh cycles (5ms, 13ms, 21ms) is still less than the 120Hz monitor of 8ms, 16ms, 24ms. Latency is not a single number.

In addition, 240Hz has half the motion blur of 120Hz, since doubling refresh rate halves scrolling motion blur. This is great for things like web browser scrolling and such.

All things equal (GtG lag + processing lag):
144fps at 240Hz has less tearing than 144fps at 144Hz.
144fps at 240Hz has less lag than 144fps at 144Hz

However, a cheap 240Hz monitor can have worse ghosting than a very good 144Hz monitor, so there's an element of panel quality that can make 240hz worse. However, most will get better esports with 240Hz+. On the other hand, I understand availability/price options are often extremely limited and going with 144Hz is easier/more affordable in many countries.

By the way, if I am to get the XL2546K , and I am not able to push more than .. lets say 160~ fps, will 240hz really be better than 144? (DyAc off)