Here my view is that to exceed 100 megabit you need the new gigabit router. Otherwise odd things happen. Be sure to disable W10's update sharing while you wait for other answers. Links follow:
https://www.howtogeek.com/224981/how-to-stop-windows-10-from-uploading-updates-to-other-pcs-over-the-internet/
https://www.howtogeek.com/349744/gigabit-ethernet-vs.-fast-ethernet-what%e2%80%99s-the-difference/
Hi All, first time on this forum and need your expert help
I have a home router Linksys E1200 and currently using HKBN (Hong Kong Broadband) service provider that gives 100Mbps connection fiber to the building, cable from router going into computer has roughly 90~mbps and wifi has both download and upload around 80 mbps on all wireless devices (iPhone and iPad).
Now i just got another service provider PCCW to install a new fiber optic line 1000mbps Fiber to the home (uses its own fiber optic modem) that's plugged into the same router, no settings changed. But it is only getting 40Mbps download and 80Mbps upload.
I tried updating the firmware to the latest version for Linksys router, but results are the same.
Seeing how all the cables are plugged in the same and no changes on the settings, i'm wondering if the ISP PCCW's protocol might be affecting the wifi performance? The only thing i can think of is the cable from the modem to router is CAT 5e for PCCW. As for HKBN i could care less if it is Cat 5 or 5e as i'm getting a higher download speed anyway.
Any help will be greatly appreciated, thank you!
Dan
EDIT: cable plug in works the same, getting 90Mbps from both ISP which is as expected since they are FastEthernet ports, the difference in download/upload speed only happens to WiFi

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