You’ve got too much stuff in the path to troubleshoot- is it the router? Is it the switch? What’s your demarc? A fiber ONT?
You need to hook your computer up as close to directly to the demarc as you can. If the speed gets better, try the router and then the switch on their own to see which slows things down.
Also, try fresh cables. Damaged cables might have your router sending things a couple times before they’re successful, and only the successful packets count (so gigabit router with 75% packet loss, or 3 failures for every success).
If you’re going to go down the rabbit hole and have a friendly network engineer to reach out to who can help troubleshoot, you can run Wireshark (free) during a speed test and find evidence of excessive packet retransmissions or FIN or RST packets (connections getting terminated abruptly).
You’ve got too much stuff in the path to troubleshoot- is it the router? Is it the switch? What’s your demarc? A fiber ONT?
You need to hook your computer up as close to directly to the demarc as you can. If the speed gets better, try the router and then the switch on their own to see which slows things down.
Also, try fresh cables. Damaged cables might have your router sending things a couple times before they’re successful, and only the successful packets count (so gigabit router with 75% packet loss, or 3 failures for every success).
If you’re going to go down the rabbit hole and have a friendly network engineer to reach out to who can help troubleshoot, you can run Wireshark (free) during a speed test and find evidence of excessive packet retransmissions or FIN or RST packets (connections getting terminated abruptly).