Paradoks: Not necessarily. As I said it looks like port throttling. A bizarre thing if it was true, but from what I've read Comcast was
Oddeus: Oh, I see. I wasn´t sure what port throttling means. Had to read up on it. Now let me put on my detective hat...
OldFatGuy said, that he increased ISP speed twice in the last years. Could it be, that he still uses an old router that is not 100% compatible? I know at least one person who did that and wondered why it didn´t work correctly.
No. I stated I have changed cable modems three times. I should have been clearer. These new modems came with the requisite "Gateway" router built in. Not a router issue. ADDED: Or I should say... it's not an issue of it being the same router and thus outdated. Back three or four speeds ago I did in fact provide my own router... but not any longer. These new modems come with Gateway wi-fi already built in. No routers needed. But I guess technically it could be an issue inside those. But it would have to repeated as this is IIRC the third one I've gotten with the built in router. (May just be the second... but i think it's the third.). The reason for the changes were changes to my ISP plan. I kept "upgrading" my speeds and they kept claiming a new modem was needed to deliver it.