I have 3 different coax lines from "the box" to my demarcation point (side of the house) from Comcast. 2 take the long way around and 1 goes under the driveway. 2 are RJ-6 and 1 is the thinner RJ-59. The RJ-59 worked for about 2 yrs. The RJ-6 cables work about 10 yrs each. Of course, the demarcation point is exactly on the opposite side of the house from where most internet equipment is located, so the runs are about 3x longer than actually needed. "The box" to my home office is in the same corner of the property. The run would be direct, then up the side of the house into the room, if grounding wasn't needed.
About once a month, I run and save the results from a speedtest-cli test. Just did another,
Code:
Testing download speed................................................................................
Download: 29.40 Mbit/s
Testing upload speed......................................................................................................
Upload: 6.04 Mbit/s
I pay for 30/6, so the numbers track to what I'm supposed to get. It is a business connection, not residential. For 50% less, I could get a residential connection for 300/20, I think, but not with the same SLA or stability and never with a static IP or 5.
Anyway, insist on an RJ-6 Coax, if you are using cable/DOCSIS for internet connectivity. Every few years, I have to contact Comcast to get the cable re-buried. They don't dig deep enough - guess they don't like digging in clay soil. I've found the trick is to say that kids play in the yard and are tripping over the exposed cable. That always gets a digging crew sent in a week or so.