Internet cuts out on certain sites after the SECOND click, sometimes the 3rd.

I've had this problem for years with my home internet connection.

There are certain sites I use all the time, like my college's Omnivox system, Quora.com, and Scotiabank's online banking, that stop responding after a couple of clicks. If I wait about a minute, I get an error message like "We cannot connect to this page at this time" or "Connection timed out. Try again?". Sometimes I don't even get the error message, but the page just sits there with the status bar stalled in the first inch, not doing anything unless I reload.

In many cases, if I turn off Wifi on my laptop, then turn it on again, I can get the page to load, possibly because the Internet thinks it's a FIRST connection, instead of my second or third. But on Omnivox or my bank's online banking page, it causes an error and I have to log back in again.

I have a desktop computer connected by an actual wire (not Wifi), and it's the same problem, except that I have no way to easily switch off internet and switch it back on again to force the page to load. Also, my iPhone connects perfectly using data, but not with my home Wifi connection. Same problem. That's THREE of my devices, all Apple, all having trouble with my home connection. My wife with her Mac laptop, same problem. My son with a Windows computer connected by Ethernet, same problem. For him it's infuriating when he is playing an online game and the computer just stops talking to the other players on the Web for a minute or two, causing him to lose the game.

These pages always allow the first connection, and in most cases, the second. As soon as I try a third click, the page freezes. I don't think it is the remote site causing the problem, because this only occurs at home. When I am at my school, or in a hotel room, or just about anywhere, those page load and operate flawlessly.

Now that I am quarantined at home and have to use Omnivox constantly, it's a huge drag having to navigate this bug all the time. Someone mentioned once that it might have something to do with "ports" but I am not computer savvy and have no idea how to trouble-shoot or fix that.

I tried bypassing the wireless router with my desktop's Ethernet connection, and it was the same problem, so I doubt it's the router's fault. It's a one-year old, expensive 5G router that I bought because I DID think it was my old router's problem. It wasn't. Everything was the same with the new router.

When I ran Videotron's online speed check, it passed with flying colours.

Any ideas?