LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

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giubox360
Posts: 24
Joined: 15 Mar 2018, 11:18

Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by giubox360 » 30 Mar 2018, 18:57

A Solid lad wrote:
giubox360 wrote:I'm just a bit scared about 2 things:
1) games where I can't keep 240 fps (so I can't set any MBR to keep the game sharp )
2) the blue trials and/or overshots with the fast/fastest overdrive.

One last thing, can you please explain to me why do you think that the alienware is less washed out than the LG, please?
why do you think also that the alienware is more responsive while playing?
Thanks in advance. :)
I'm too tired to comment on your first qualm, as it has been discussed way too many times on this forum :D
My reaction to the second: ummm.... you can just leave the OD setting on normal and avoid almost all overshoot? nobody forces u to use "fast" or fastest" :D

Hmm, on the LG, when you're moving a window around text in it for example... you can tell that stuff s just more smeary, compared to the Dell... idk what's the cause of of it.
I can see this even when I scroll this very page smoothly, in which I'm writing this reply.
On the LG, the lines of the letters get more thin, while I'm scrolling... and their outline is smeary.
On the Dell, they retain their thickness better, and less smear is present around them...
I think that's the most easy way to demonstrate what I'm talking about.
Ingame, this contributes to a smeary image, when panning... and this might contribute to the overall less responsive feel.
Oh yeah I found these little blue trailings on the small black text too, but only rarely. (maybe is the overdrive compromise)
But ingame using MBR 240Hz is very smooth and I don't see any artifacts if I keep fps high.
Do you think that the Alienware at "Normal" could be fast as the LG on "faster" mode? and What about the lack of MBR?
I really think that these monitors have the same input lag with a difference of 1/2 ms....the panels are so similar.
I'm just so curious why don't you find great the 240 hz MBR on LG, and why do you prefer using the Alienware freesync version, if you don't mind to the DPC latency when you play the game how do you feel it?
Try my last setting for LG if you like:

Colours: default Custom.
black tuner: 30
brightness: 100
contrast: 57
sharpness: 70
gamma: 2
MBR: ON
Overdrive: faster.
VT: 1304

on nvidia panel: digital vibrance between 50 and 75%
Let me know if you like it :)

giubox360
Posts: 24
Joined: 15 Mar 2018, 11:18

Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by giubox360 » 30 Mar 2018, 19:47

k2viper wrote:It should be worse because I rolled back VT from 1304 to default 1180, to have dotclock headroom needed for 2200 HT.
I havent tested this res, only checked that 2200 HT resolution at 240hz had no effect on DPC.
Mate could be possible also raise a bit more the VT reducing the resolution, but keeping 240hz?
Some benq user already did it, if I'm not wrong making a custom resolution lower than the native one. ( I'm just curious)

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A Solid lad
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Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by A Solid lad » 31 Mar 2018, 04:02

giubox360 wrote:Oh yeah I found these little blue trailings on the small black text too, but only rarely. (maybe is the overdrive compromise)
But ingame using MBR 240Hz is very smooth and I don't see any artifacts if I keep fps high.
Do you think that the Alienware at "Normal" could be fast as the LG on "faster" mode? and What about the lack of MBR?
I really think that these monitors have the same input lag with a difference of 1/2 ms....the panels are so similar.
I'm just so curious why don't you find great the 240 hz MBR on LG, and why do you prefer using the Alienware freesync version, if you don't mind to the DPC latency when you play the game how do you feel it?
I simply find the Alienware/Dell more responsive, plus when the picture is in motion (e.g. panning left/right ingame) it stays more sharp, less smeary on the Dell. Can't explain it better... try it and you'll see.
Maybe the lack of clarity contributes to the more sluggish feel...

As for the overdrive settings: phrases like "normal" and "fast" don't mean sh*t.
You've got a certain amount of overdrive intensity settings with different names stuck to them by the manufacturer... "normal" on one monitor might be equivalent to "fastEsTeSTEST" on another.
Just load up https://www.testufo.com/ghosting and try out each setting... see the results yourself, and decide which one works best for you.
If you're worried about latency differentials between OD modes, do not be.
Overdrive generally affects pixel response times, not input lag...
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k2viper
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Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by k2viper » 31 Mar 2018, 05:49

A Solid lad wrote: Hmm, on the LG, when you're moving a window around on the desktop with text in it for example... you can tell that stuff s just more smeary, compared to the Dell... idk what's the cause of of it.
I can see this even when I scroll this very page smoothly, in which I'm writing this reply.
On the LG, the lines of the letters get more thin, while I'm scrolling... and their outline is smeary.
On the Dell, they retain their thickness better, and less smear is present around them...
That's how overdrive is calibrated on LG and Dell. Maybe in that particular gtg scenario, overshoot on LG is more visible, despite generally low overshoot in most other cases.
On LG scrolled text look a bit better when you completely disable the overdrive (off), but for most other scenarios I found Faster is the best.

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k2viper
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Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by k2viper » 31 Mar 2018, 05:57

Btw why you still stuck to this DPC latency checker tool? Why not to use Latencymon, its more powerful and common, and it relevantly works between windows versions (7-10).

giubox360
Posts: 24
Joined: 15 Mar 2018, 11:18

Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by giubox360 » 31 Mar 2018, 07:39

A Solid lad wrote:
giubox360 wrote:Oh yeah I found these little blue trailings on the small black text too, but only rarely. (maybe is the overdrive compromise)
But ingame using MBR 240Hz is very smooth and I don't see any artifacts if I keep fps high.
Do you think that the Alienware at "Normal" could be fast as the LG on "faster" mode? and What about the lack of MBR?
I really think that these monitors have the same input lag with a difference of 1/2 ms....the panels are so similar.
I'm just so curious why don't you find great the 240 hz MBR on LG, and why do you prefer using the Alienware freesync version, if you don't mind to the DPC latency when you play the game how do you feel it?
I simply find the Alienware/Dell more responsive, plus when the picture is in motion (e.g. panning left/right ingame) it stays more sharp, less smeary on the Dell. Can't explain it better... try it and you'll see.
Maybe the lack of clarity contributes to the more sluggish feel...

As for the overdrive settings: phrases like "normal" and "fast" don't mean sh*t.
You've got a certain amount of overdrive intensity settings with different names stuck to them by the manufacturer... "normal" on one monitor might be equivalent to "fastEsTeSTEST" on another.
Just load up https://www.testufo.com/ghosting and try out each setting... see the results yourself, and decide which one works best for you.
If you're worried about latency differentials between OD modes, do not be.
Overdrive generally affects pixel response times, not input lag...
Yeah I usually use the testUfo and also the scrolling test for MBR reduction too, and if you raise the speed from 960 pixel to 1920 pixel....you can see how is better to use "faster" on the LG....how about "normal" overdrive if you raise the speed there? Could you please compare them? :)

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A Solid lad
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Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by A Solid lad » 31 Mar 2018, 09:28

k2viper wrote:Btw why you still stuck to this DPC latency checker tool? Why not to use Latencymon, its more powerful and common, and it relevantly works between windows versions (7-10).
It feels more lightweight and less cumbersome... I'm getting lower and more stable numbers with it... I think it puts a smaller load on the system, since it only measured one thing.
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A Solid lad
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Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by A Solid lad » 31 Mar 2018, 09:34

giubox360 wrote:...how about "normal" overdrive if you raise the speed there? Could you please compare them? :)
Don't want to promise anything, as I'm already pretty fed up with this stuff... to the point where I don't even want to see my dpc latency...and also, I re-packaged the LG...sending it back on tuesday morning.
Unless you are REALLY curious, I don't want to open it and re-seal the box again.. xD

I do have extremely low and stable dpc latency without installing a "game ready driver", so my guess is, that everything else is optimised on my PC, but I can't find a driver with which I could have sub 15 us most of the time.
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giubox360
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Joined: 15 Mar 2018, 11:18

Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by giubox360 » 31 Mar 2018, 10:15

A Solid lad wrote:
giubox360 wrote:...how about "normal" overdrive if you raise the speed there? Could you please compare them? :)
Don't want to promise anything, as I'm already pretty fed up with this stuff... to the point where I don't even want to see my dpc latency...and also, I re-packaged the LG...sending it back on tuesday morning.
Unless you are REALLY curious, I don't want to open it and re-seal the box again.. xD

I do have extremely low and stable dpc latency without installing a "game ready driver", so my guess is, that everything else is optimised on my PC, but I can't find a driver with which I could have sub 15 us most of the time.
mate, to say the truth, I'm really curious :) Can you please try that test, before send it back? I will appreciate a lot if you find the time.
Have a nice day!

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k2viper
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Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by k2viper » 31 Mar 2018, 10:37

A Solid lad wrote: I do have extremely low and stable dpc latency without installing a "game ready driver", so my guess is, that everything else is optimised on my PC, but I can't find a driver with which I could have sub 15 us most of the time.
You are using generic windows default driver? And how games run with it?

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