My input lag finally makes sense to me. (Please Read)

Everything about latency. This section is mainly user/consumer discussion. (Peer-reviewed scientific discussion should go in Laboratory section). Tips, mouse lag, display lag, game engine lag, network lag, whole input lag chain, VSYNC OFF vs VSYNC ON, and more! Input Lag Articles on Blur Busters.
Sandy
Posts: 129
Joined: 30 Mar 2024, 02:14

Re: My input lag finally makes sense to me. (Please Read)

Post by Sandy » 05 Nov 2025, 04:10

MK92 wrote:
04 Nov 2025, 04:51
So you went from a correct culprit - overloaded electrical grid during the daytime - to some "move cables, change ports, blow dust from your PC, re-plug peripherals"? Placebo fixing...it cannot be "better" or "worse" - you either have a problem, or you don't. And if the problem is power as you correctly assumed, then nothing you mention will really help.

It's output lag, not "input" lag. Your ports doesn't matter, everything you click or type is correctly inserted into the mobo, the CPU correctly processes it (and this is why none of the software tests will ever pick up anything - latencymon is perfectly fine, FPS is high, everything is fine), but when the information is trying to reach your monitor, it gets corrupted. It's a de-sync between the MOBO and output monitor, NOT between mouse/keyboard/whatever inputs and MOBO.
I've used different CPUs with integrated graphics cards, and all of them had input lag issues, so I can confirm that this isn't related to NVIDIA. I think the problem is most likely with Microsoft.

MK92
Posts: 28
Joined: 06 Oct 2025, 15:11

Re: My input lag finally makes sense to me. (Please Read)

Post by MK92 » 05 Nov 2025, 04:17

I'ts not Micorsoft of course, because its exactly the same on Linux as well, and I've even tried ancient Windows XP and it was still the same.
BumFlannel wrote:
04 Nov 2025, 22:45
So why do issues remain on a UPS while fully disconnected from the mains/grid?
What do you mean disconnected UPS? You cannot get realistic results from those 5 minutes of usage on a battery.
Slender wrote:
05 Nov 2025, 03:28
BumFlannel wrote:
04 Nov 2025, 22:45
So why do issues remain on a UPS while fully disconnected from the mains/grid?
because that not electricity
Fine then it's not, now keep on moving cables and ports around, buy 10 new PCs and monitors, try another 100 useless software and BIOS "tweaks" that you will find on this forum. And then maybe after another 5 years, you will accept the facts that electricity absolutely is the culprit, and that you cannot do anything about it beside moving to a location where the grid is not overloaded and riddled with interharmonics.

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Slender
Posts: 1576
Joined: 25 Jan 2020, 17:55

Re: My input lag finally makes sense to me. (Please Read)

Post by Slender » 05 Nov 2025, 05:26

MK92 wrote:
05 Nov 2025, 04:17
I'ts not Micorsoft of course, because its exactly the same on Linux as well, and I've even tried ancient Windows XP and it was still the same.
BumFlannel wrote:
04 Nov 2025, 22:45
So why do issues remain on a UPS while fully disconnected from the mains/grid?
What do you mean disconnected UPS? You cannot get realistic results from those 5 minutes of usage on a battery.
Slender wrote:
05 Nov 2025, 03:28
BumFlannel wrote:
04 Nov 2025, 22:45
So why do issues remain on a UPS while fully disconnected from the mains/grid?
because that not electricity
Fine then it's not, now keep on moving cables and ports around, buy 10 new PCs and monitors, try another 100 useless software and BIOS "tweaks" that you will find on this forum. And then maybe after another 5 years, you will accept the facts that electricity absolutely is the culprit, and that you cannot do anything about it beside moving to a location where the grid is not overloaded and riddled with interharmonics.
what frequency affect on pc?

paddyhhh
Posts: 37
Joined: 10 Feb 2020, 13:17

Re: My input lag finally makes sense to me. (Please Read)

Post by paddyhhh » 05 Nov 2025, 06:59

external batteries for UPS exists. I can play 8-10h offgrid with it. As Slender says its not fixing the issue, there is still fluctuations.
Its not simply a "grid problem".

MK92
Posts: 28
Joined: 06 Oct 2025, 15:11

Re: My input lag finally makes sense to me. (Please Read)

Post by MK92 » 05 Nov 2025, 07:03

Do you have problems in dekstop and BIOS, or only in games? Problems in games only are NOT electricity related, obviously, but network. I have stuttering, choppy Windows animations, everything working slower, bad mouse, bad visual quality in desktop and BIOS as well, but only during the day.

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Slender
Posts: 1576
Joined: 25 Jan 2020, 17:55

Re: My input lag finally makes sense to me. (Please Read)

Post by Slender » 05 Nov 2025, 07:16

paddyhhh wrote:
05 Nov 2025, 06:59
external batteries for UPS exists. I can play 8-10h offgrid with it. As Slender says its not fixing the issue, there is still fluctuations.
Its not simply a "grid problem".
can you try disable all electric in your house panel and play on ups?

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Slender
Posts: 1576
Joined: 25 Jan 2020, 17:55

Re: My input lag finally makes sense to me. (Please Read)

Post by Slender » 05 Nov 2025, 07:29

MK92 wrote:
05 Nov 2025, 07:03
Do you have problems in dekstop and BIOS, or only in games? Problems in games only are NOT electricity related, obviously, but network. I have stuttering, choppy Windows animations, everything working slower, bad mouse, bad visual quality in desktop and BIOS as well, but only during the day.
You said you have tests where you see that the harmonics differ during the day and at night. Post these tests and show the frequencies.

kimchi man
Posts: 2
Joined: 17 Sep 2025, 21:50

Re: My input lag finally makes sense to me. (Please Read)

Post by kimchi man » 05 Nov 2025, 09:07

People seem to think the main issue is the power issue. I also believe it's a power issue. Because when you list all the possible causes using the method of elimination, the only thing left is the power issue. Has anyone with this problem purchased a laptop and tried it out?

paddyhhh
Posts: 37
Joined: 10 Feb 2020, 13:17

Re: My input lag finally makes sense to me. (Please Read)

Post by paddyhhh » 05 Nov 2025, 10:57

Slender wrote:
05 Nov 2025, 07:16
paddyhhh wrote:
05 Nov 2025, 06:59
external batteries for UPS exists. I can play 8-10h offgrid with it. As Slender says its not fixing the issue, there is still fluctuations.
Its not simply a "grid problem".
can you try disable all electric in your house panel and play on ups?
I usually disabled the breaker for the room with PC.

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Slender
Posts: 1576
Joined: 25 Jan 2020, 17:55

Re: My input lag finally makes sense to me. (Please Read)

Post by Slender » 05 Nov 2025, 16:37

paddyhhh wrote:
05 Nov 2025, 10:57
Slender wrote:
05 Nov 2025, 07:16
paddyhhh wrote:
05 Nov 2025, 06:59
external batteries for UPS exists. I can play 8-10h offgrid with it. As Slender says its not fixing the issue, there is still fluctuations.
Its not simply a "grid problem".
can you try disable all electric in your house panel and play on ups?
I usually disabled the breaker for the room with PC.
I mean, completely disconnect the wiring in the walls. If you have $20, buy a wt3121, which detects 50/60Hz, to make sure your wiring is completely disconnected (and that your neighbors' wiring isn't affecting your system).

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