Input delay -> from bad insulation resistance?

[Janbobo]

Hello,

It seems like I'm one of the lucky people that suffer from electrical related input delay on my computer which suddenly happened in 2021
out of nowhere for no apparent reason.

I just turned on my computer that day as usual and all of the sudden my monitor flickered for a moment. After everything went back to normal I realized that my input feels extremely weird in terms of randomly delayed or non-registered keystrokes as well as inaccurate mouse movements.

I had an old system with an i5 4670k and a GTX 980 which run flawlessly for 7 years so I tried to rule out everything like:

- Swapped my peripherals like mouse, keyboard and monitor several times
- Tried every possible windows optimization/Bios Tweak
- Changed my ISP + Router
- Swapped from Wifi to LAN
- Build two completely new PC-Systems
- Tested my brothers computer who lives next by which performed noticeably better
- Checked with EMI-Meter (measuring high +1.000 m/V during the day -> low 100 at night)
- Tested emi filters

After I ruled out any software, hardware or internet related issue I thought it must be related to my electricity because it started shortly after my father changed some sockets in the house so I asked a friend electrician to take a look. He found/fixed some errors like a wrongly installed circuit breaker, cleaned up the power box and fixed the grounding in my room but he said the sockets are all installed correctly.

I ordered a second electrician for a check and the only thing he found was low insulation resistance (0.15MΩ which should be at least 1MΩ) on exactly the sockets my father swapped which could indicate a lack of isolation.

The question is could this be it?.... I'm so done with that stuff, I couldn't play a single decent game in years...

[cursed-gamer]

Most likely not.

[Janbobo]

Most likely not.

According to the electrician a lack of isolation can cause short circuits as well as residual current which could influence electric devices in theory.

[Zwss98]

Anything electricity related might affect the performance of any electronic device, because in my case , my lag reaches maximum in the night no matter which socket i use in my apartment even with online ups, but in the morning or noon it's better.
So in your case I think there is a source in your house causing electricity to generate emi noise
But that's hard to find and maybe cost a lot of money

[F1zus]

Hello,

- Checked with EMI-Meter (measuring high +1.000 m/V during the day -> low 100 at night)
- Tested emi filters

This is the main problem.
Your noise level during the day is 10 times higher than at night.
Compare the behavior of the computer during the day and at night. You will see the difference.
For a good game, the noise level should be 100 both during the day and at night.
EMI filters do not help in this matter, they are not able to suppress electrical interference, even a double-conversion UPS in some cases lets interference through.
This is a complex topic.
There can be many reasons, starting from your electrical appliances in the apartment:
- light bulbs
- microwave oven
- TV
- refrigerator
- washing machine
- air conditioner
and so on.
I know one thing, that interference penetrates the computer through:
1) hdmi/dp monitor cable
2) lan cable from the router
3) computer power supply.
The computer power supply has the best protection among these 3 things.

[Janbobo]

Anything electricity related might affect the performance of any electronic device, because in my case , my lag reaches maximum in the night no matter which socket i use in my apartment even with online ups, but in the morning or noon it's better.
So in your case I think there is a source in your house causing electricity to generate emi noise
But that's hard to find and maybe cost a lot of money

I mean nothing really changed except that we changed some sockets. Actually I played years without any grounding because I didn't know it didn't worked on my room. The only thing I could think of are LED-lights that we installed but besides that only the insulation resistance is suspicious. Everything else works as intended according to the electrician.

[Janbobo]

Hello,

- Checked with EMI-Meter (measuring high +1.000 m/V during the day -> low 100 at night)
- Tested emi filters

This is the main problem.
Your noise level during the day is 10 times higher than at night.
Compare the behavior of the computer during the day and at night. You will see the difference.
For a good game, the noise level should be 100 both during the day and at night.
EMI filters do not help in this matter, they are not able to suppress electrical interference, even a double-conversion UPS in some cases lets interference through.
This is a complex topic.
There can be many reasons, starting from your electrical appliances in the apartment:
- light bulbs
- microwave oven
- TV
- refrigerator
- washing machine
- air conditioner
and so on.
I know one thing, that interference penetrates the computer through:
1) hdmi/dp monitor cable
2) lan cable from the router
3) computer power supply.
The computer power supply has the best protection among these 3 things.

Sure theoretically it could be an EMI issue but this also had to be present before everything became bad. I also didn't feel a difference between day -> night despite lower EMI-levels.

What I found out is that the EMI-Levels skyrocket at night when I turn on my computer from 150 m/V to like 1.500 m/V so my computer itself producing a lot of it.

Weirdly enough the problem persisted when i tested my computer at my grandfathers house, we live in terraced houses right next to each other so we share the same power-supply. I couldn't test it anywhere else yet.

[Zwss98]

If the electrician confirmed that there's nothing wrong and the electricity is stable (voltage & frequency ) then its 99% emi issue , its hard to solve and identify unfortunately , but for me i put my xbox under the table (touching the ground ) so the table should cover it from above to work as a shield , the result is kinda good but i see fluctuation in input lag and sensitivity but for me its far better than before and at least playable bcuz before it was literally unplayable

[cursed-gamer]

What I found out is that the EMI-Levels skyrocket at night when I turn on my computer from 150 m/V to like 1.500 m/V so my computer itself producing a lot of it.

It's normal for switching power supply.

According to the electrician a lack of isolation can cause short circuits as well as residual current which could influence electric devices in theory.

Then ask your electrician to fix it if he knows better? What's the point of asking us if this is it?

[amorou]

Hello,

It seems like I'm one of the lucky people that suffer from electrical related input delay on my computer which suddenly happened in 2021
out of nowhere for no apparent reason.

I just turned on my computer that day as usual and all of the sudden my monitor flickered for a moment. After everything went back to normal I realized that my input feels extremely weird in terms of randomly delayed or non-registered keystrokes as well as inaccurate mouse movements.

I had an old system with an i5 4670k and a GTX 980 which run flawlessly for 7 years so I tried to rule out everything like:

- Swapped my peripherals like mouse, keyboard and monitor several times
- Tried every possible windows optimization/Bios Tweak
- Changed my ISP + Router
- Swapped from Wifi to LAN
- Build two completely new PC-Systems
- Tested my brothers computer who lives next by which performed noticeably better
- Checked with EMI-Meter (measuring high +1.000 m/V during the day -> low 100 at night)
- Tested emi filters

After I ruled out any software, hardware or internet related issue I thought it must be related to my electricity because it started shortly after my father changed some sockets in the house so I asked a friend electrician to take a look. He found/fixed some errors like a wrongly installed circuit breaker, cleaned up the power box and fixed the grounding in my room but he said the sockets are all installed correctly.

I ordered a second electrician for a check and the only thing he found was low insulation resistance (0.15MΩ which should be at least 1MΩ) on exactly the sockets my father swapped which could indicate a lack of isolation.

The question is could this be it?.... I'm so done with that stuff, I couldn't play a single decent game in years...

Nope its not from that for sure

Its prolly odd frequencys in neutral line , and to analyse neutral line , we need very expensive equipments , they would prolly cost 100k dollar at least.
And we need a engineer to use them , you , me or an ordinary eletrican cant wont be able to use (understand) them