UPDATE 2 | Fixed input lag and floaty mouse with UPS

[jterri]

This issue is complex, and people’s experiences differ. Some attribute their problem to a bad neutral line or electrical issues when they might actually be dealing with something else. However, I’ve become convinced that the problem is electrical and not EMI or anything else.

After I tested by draining my phone battery to 0% and then charging it in another house, the difference became clear—how smoothly and normally it works there compared to how slow my phone browsing is at home. It becomes slow when it’s charged at home and used, and there’s also strange behavior while using the phone during charging.

All of this is enough evidence for me. It’s a very complex issue, and I apologize for my language since I’m using a translation tool.

You’re right. LUCKILY for me and I mean LUCKILY for me, my issue is just micro sensor jitter with the mouse and a bit of input delay on the keyboard. The rest of the PC works except for the PSU or motherboard/USB polling probably, and on top of that the monitor works, the rest of my setup works, my house has 96-97% good electricity, good grounding and all that. The reason why I know my mouse and keyboard issue is electrical is because I’ve tested multiple keyboards and mice along with a new complete setup and I’m still having issues with this jitter and keyboard delay, which is why I’m confident that the UPS will work for me at least because my issues are very minor.

[Yazeedtt]

If your issue isn’t that bad, that’s good. I hope it doesn’t get worse, because years ago I had the same experience—a slight input delay—but after two years the problem got worse and got out of control. It even started affecting the image quality, and the situation literally became unplayable.

[MK92]

This issue is complex, and people’s experiences differ. Some attribute their problem to a bad neutral line or electrical issues when they might actually be dealing with something else. However, I’ve become convinced that the problem is electrical and not EMI or anything else.

After I tested by draining my phone battery to 0% and then charging it in another house, the difference became clear—how smoothly and normally it works there compared to how slow my phone browsing is at home. It becomes slow when it’s charged at home and used, and there’s also strange behavior while using the phone during charging.

All of this is enough evidence for me. It’s a very complex issue, and I apologize for my language since I’m using a translation tool.

So you said you are convicted that the problem is electrical, and then you test this with how smooth and fast the phone is? You know that bad electricity isn't "stored" in the battery right? If your phone works bad while you have it unplugged from the charger in the wall, then you have something completely else, not electricity.

If the electricity would be the problem, then your phone won't "browse slowly", you would only see the problems during charging...like very slow charging (~2 hours to get from 0% to 90%, or even more), the charger would be buzzing, the charger would be very hot during charging, the charger might fully disconnect and stop charging until you re-plug it etc., those are the signs of electricity problems while charging, not slow browsing when the phone is unplugged.

[Yazeedtt]

You’re saying: “How can you say the problem isn’t electrical? It’s caused by that—and other things like EMF interference and electrical wires turning into antennas that pick up interference. Man, this problem can drive someone crazy just thinking about it.

[MK92]

This would not cause PC problems, your PC sends no signals through air to the "antennas" in the wall, and neither it picks up anything. The issues are caused by direct power quality from the wall, not some emi emitting through the air from the broken wires.

And even if this would be the case, you would have stuff like signal problems on monitor, buzzing in speakers, wi-fi disconnections etc., and not choppiness of the frametimes, mouse delays, 50hz feeling in desktop...this cannot be caused by air interference, this can be caused only by direct power coming to PSU input.

[Yazeedtt]

Man, everything you mentioned is happening to me. I’ve been reading about this issue for a while and have spent days researching, but I only started writing and created an account two days ago. I’m aware of the possible causes of the problem—it could be due to the neutral line, harmonic distortion coming from the power station, high-frequency fields from neighbors, or something related to the building itself.

Yes, my system feels like it’s running at 50 Hz, and there are strange buzzing or vibrating sounds. When I use my phone while wearing headphones, I notice clear delay. There’s also noticeable lag on the desktop, and problems with Wi-Fi (both 4G and 5G) with obvious disconnections. The phone feels slow and unresponsive.

Even the small refrigerators in the rooms make loud noises, and the water cooler—everything in the house feels abnormal. Man, my family bought a QLED TV to watch shows and matches, but it looks like an old regular screen. I’ve tried all the known solutions so I don’t waste time—grounding, a UPS, and even an EcoFlow power station (used separately from the system). But I’ve heard that charging it inside the house doesn’t help, and that charging it outside or using solar power might solve the issue.

Honestly, I’m fed up with this problem and don’t want to try anything I’m not sure about. I ordered an EMF radiation detector and I’m waiting for it to arrive so I can run more tests.

[1nputlag34]

Man, everything you mentioned is happening to me. I’ve been reading about this issue for a while and have spent days researching, but I only started writing and created an account two days ago. I’m aware of the possible causes of the problem—it could be due to the neutral line, harmonic distortion coming from the power station, high-frequency fields from neighbors, or something related to the building itself.

Yes, my system feels like it’s running at 50 Hz, and there are strange buzzing or vibrating sounds. When I use my phone while wearing headphones, I notice clear delay. There’s also noticeable lag on the desktop, and problems with Wi-Fi (both 4G and 5G) with obvious disconnections. The phone feels slow and unresponsive.

Even the small refrigerators in the rooms make loud noises, and the water cooler—everything in the house feels abnormal. Man, my family bought a QLED TV to watch shows and matches, but it looks like an old regular screen. I’ve tried all the known solutions so I don’t waste time—grounding, a UPS, and even an EcoFlow power station (used separately from the system). But I’ve heard that charging it inside the house doesn’t help, and that charging it outside or using solar power might solve the issue.

Honestly, I’m fed up with this problem and don’t want to try anything I’m not sure about. I ordered an EMF radiation detector and I’m waiting for it to arrive so I can run more tests.

are u french?

[MK92]

I have exactly the same shit as you, buzzing in PC speakers (it gets even louder when the PC is actually turned off), refrigerator making loud buzzing sounds, delay between sound and picture on my TV, and the TV also feels like its at 40hz or something, fast moving images are simply not smooth, and a brand new boiler (water cooler) from 2025 making sounds like its 10+ years old, I have slow charging of phones on 3+ different chargers and cables etc. etc., probably forgot some other stuff as well...but all lights in the house are working perfectly fine, no dimming or flickering or anything, which is weird because voltage drops or neutral problems almost always cause lights flickering, but I have no problems with that.

Hell, I even have to put a heavy book on top of my case because my whole case vibrates and is making high pitch sounds for some unknown reason (it's not fans or anything mechanical), probably VRM coil whine due to bad electricity, and it somehow stops if I put a pressure on top of the PC case...and this happens all the time, not when I stress the GPU or CPU, even at 0% idle usage.

What is causing this? I don't know exactly, but it must be something with shared neutrals and harmonics, because at least my PC works fine late at night.

[Yazeedtt]

Man, everything you mentioned is happening to me. I’ve been reading about this issue for a while and have spent days researching, but I only started writing and created an account two days ago. I’m aware of the possible causes of the problem—it could be due to the neutral line, harmonic distortion coming from the power station, high-frequency fields from neighbors, or something related to the building itself.

Yes, my system feels like it’s running at 50 Hz, and there are strange buzzing or vibrating sounds. When I use my phone while wearing headphones, I notice clear delay. There’s also noticeable lag on the desktop, and problems with Wi-Fi (both 4G and 5G) with obvious disconnections. The phone feels slow and unresponsive.

Even the small refrigerators in the rooms make loud noises, and the water cooler—everything in the house feels abnormal. Man, my family bought a QLED TV to watch shows and matches, but it looks like an old regular screen. I’ve tried all the known solutions so I don’t waste time—grounding, a UPS, and even an EcoFlow power station (used separately from the system). But I’ve heard that charging it inside the house doesn’t help, and that charging it outside or using solar power might solve the issue.

Honestly, I’m fed up with this problem and don’t want to try anything I’m not sure about. I ordered an EMF radiation detector and I’m waiting for it to arrive so I can run more tests.

are u french?

No , saudi arabia

[Yazeedtt]

Yes, the lights work normally, but many of them get replaced after about a year and a half to two years. They often fail during summer when we travel—it seems like they absorb power surges or something like that, since all the appliances and air conditioners are turned off.

Yes, there are noises coming from inside my PC, and it seems like they are from the power supply capacitors. It’s great that your system works better at night. Sometimes I laugh when I read that most people’s situation improves at certain times or late at night—man, for me it’s a disaster all the time and completely unplayable