Q: Ethernet is slow but looks like it has fast speeds
Q: Ethernet is slow but looks like it has fast speeds
That's your next best move. Now the guys will probably lie and say they see nothing wrong, just blaming all of your gear. You should try to fix every single thing they are going to blame on you. If you have a second modem or router, plug the PC directly into one and check if both devices slow things down a lot. Sometimes you just need to power cycle (turn off and back on) the modem whenever you change something else in your setup. The reason for this is so they can't say "it's my router." I do agree with most of what was said above, but 35 Mbps isn't even close to 10% of what you pay for. If you only get about 75%, maybe they could just be okay with that junk. But if your ISP has no other options and you have nothing else to use, they can do whatever they want.