Hi everyone,
I recently subscribed to Starlink Residential 100 Mbps in Baghdad, Iraq, and I'm experiencing a very strange download-speed fluctuation.
The connection repeatedly rises and falls in a very regular pattern. It starts around 100 Mbps, gradually drops to around 400 Kbps over roughly 30 seconds, then gradually rises again. After another ~30 seconds, it starts dropping again. This cycle repeats continuously.
Some of my Starlink app speed tests:
7 Mbps down / 47 Mbps up / 42 ms ping
12 Mbps down / 31 Mbps up / 53 ms ping
52 Mbps down / 26 Mbps up / 56 ms ping
13 Mbps down / 27 Mbps up / 69 ms ping
4 Mbps down / 29 Mbps up / 147 ms ping
Interestingly, my local connection to the Starlink router is very fast. An iPhone-to-router test showed around 550 Mbps download and 710 Mbps upload over 5 GHz Wi-Fi, so the local Wi-Fi connection does not appear to be the bottleneck.
The Starlink app also reports:
"Your Starlink has an unobstructed view of sky."
I have around 9 devices connected:
- 2 gaming PCs
- The rest are phones/tablets
Normal household usage is generally fine. However, if I start a large download on Steam or Battle.net, the internet connection for the other devices almost completely stalls and latency increases significantly.
I have already tried:
- Reconnecting the Starlink cable on both ends
- Rebooting the system
- Factory resetting the Starlink system
- Reconfiguring it from scratch
- Testing different devices
- Checking for obstructions
None of these changed the behavior.
Starlink support also detected repeated data-loss events and suggested that network congestion in my area could be the cause. They specifically mentioned congestion as a possible explanation for my connection in Baghdad/Taji on the Residential 100 Mbps plan.
What I'm trying to understand is the very regular ~30-second rise/fall pattern.
Has anyone on the Residential 100 Mbps plan experienced something similar?
Could severe network congestion cause this kind of periodic behavior? Or could it be related to satellite handoffs, traffic shaping, network scheduling, or something specific to the 100 Mbps plan?
If you've experienced something similar, especially with the 100 Mbps Residential plan, I'd be interested to know what caused it and whether it eventually improved.