How many of you have LED ceiling light?

Separate area for niche lag issues including unexpected causes and/or electromagnetic interference (ECC = retransmits = lag). Interference (EMI, EMF) of all kinds (wired, wireless, external, internal, environment, bad component) can cause error-correction latencies like a bad modem connection. Troubleshooting may require university degree. Your lag issue is likely not EMI. Please read this before entering sub-forum.
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This subforum is for advanced users only. This separate area is for niche or unexpected lag issues such as electromagnetic interference (EMI, EMF, electrical, radiofrequency, etc). Interference of all kinds (wired, wireless, external, internal, environment, bad component) can cause error-correction (ECC) latencies like a bad modem connection, except internally in a circuit. ECC = retransmits = lag. Troubleshooting may require university degree. Your lag issue is likely not EMI.
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dermodemon
Posts: 174
Joined: 10 Aug 2023, 12:03

How many of you have LED ceiling light?

Post by dermodemon » 29 May 2026, 11:41

I just found out that LED devices can generate massive RF interference, especially the ones with drivers. All of my ceiling lights use LED strips with built-in driver controllers. As an experiment, I completely switched off the lighting breaker in the electrical panel β€” and guess what? The stuttering in games disappeared, the mouse started feeling natural, responsive, and precise again. Character models are no longer flying around at the speed of light, and overall every game feels much smoother now. What kind of black magic is this? And what lights am I supposed to use now? I can’t live without light :D
P.S. i also turned off all of my rgb ledS inside pc and keyboard\mouse

Catgrovee
Posts: 1
Joined: 14 May 2026, 12:50

Re: How many of you have LED ceiling light?

Post by Catgrovee » 29 May 2026, 20:14

I have the same problem, but in my case the interference is caused by a ceiling fan. The strange thing is that the interference is very high even when it's turned off.

Asesino34
Posts: 40
Joined: 30 Jun 2022, 11:47

Re: How many of you have LED ceiling light?

Post by Asesino34 » 12 Jun 2026, 01:38

Ask an electrician to create a dedicated power line from the outlet to your room, or wherever you have your PC.
At least where I live, this is possible, so no other connection interferes with the PC. The thing is, you have to isolate everything and not connect anything from the other section. In other words, you need to connect your PC, monitor, and modem to the same outlet that goes directly there without any intermediaries.

A very close friend of mine has his setup like this, but he started having problems again when he connected his wireless modem through Ethernet. The problem is that the modem is getting power from the other section. The only issue he had was ping spikes. I was going to do the same thing too, because at night there are many connections running in a house.

Now someone might say that if you turn everything off and it still works badly, then this is not the solution. I disagree. I still think it is not the same to have a direct power connection that only feeds certain components, with a cable that is not split, interrupted, joined, or shared, compared to just turning things off and hoping it works. In your case, that might be the cause, but in my opinion you need a single dedicated cable that powers only what you need and does not get interference from refrigerators, outdoor lights, indoor lights, TVs, etc.

What is often mentioned is that at night it works very well and during the day it works badly. It could easily be related to this. And what if the cables cool down? And the PC ends up receiving power correctly? There are things that cannot be ruled out

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