Modem limits performance to 100Mbps
Modem limits performance to 100Mbps
I recently changed my internet speed from 300Mbit/s to 1000Mbit/s and my ISP swapped out the modem. The 300 plan and old modem worked fine for years, giving reliable 300Mbit/s performance. Recently, speeds dropped to 1Gbps for a few days, then it fluctuated between 100Mbps and 1Gbps depending on the device. After restarting both PCs and checking cables, ports, and connections, the modem still reported 100Mbps even after some time. I’m wondering if there’s an issue with my PC, the Cat5e cable length, or the modem itself. My ISP seems to be limiting speeds regardless of what I do, unless I pay significantly more.
I recommend connecting your PC to the same cables used by other systems if possible. If that achieves higher speeds, it may indicate a problem with your cable. Using a network switch could help shorten the cable length, boosting signal strength while also being more cost-effective and faster for replacement. A similar approach might work here.
Currently the connection speed has returned to 100Mbps, but restarting or shutting down the PC didn’t help. I upgraded to a PC upstairs using the S775 model and connected it to a TP-Link Archer C2 AC900 (V3). That setup provides 1Gbps and significantly speeds up specific sites. My PC is back in my room now, achieving full 1Gbps again.