Internet service bizarre with NO answers to fix??

Issue #1: I currently have 1 gig Internet speed (service) from my local cable provider BlueStream.  For months I have had an annoying intermittent problem with their service.  There are times when the service will completely go down multiple times in one day, but each time it goes down, it may be for only 1 or 2 minutes and then it right back up as if nothing had happened.  The modem did NOT reboot, perhaps the indicator light may go out and back on, but that's it.  This happens about 5 or 6 days per month, sometimes more.  

Issue #2: The second issue is when I go to ANY random site, the web page will NOT load properly or not load at all.  However, as soon as I hit F5 to reload it pops right on in a millisecond.  I get this on 3 different browsers, Edge, Firefox and Chrome.  I have tested my connection MANY times using http://www.dslreports.com/speedtest and usually the tests results are very good to excellent. BlueStream has been out to my home 5 different times for these issues.  I am on my 4th modem and two different models.  They have also rewired the outside lines and checked most everything outside of my house.  Nothing has fixed this issue.  

In contrast, I disconnected my ethernet connection and reconnected to my internet hot spot on my iphone and at only 8MB/s I was loading pages faster with no problems as I outlined in issue #2.

By pure luck, the last time they were out they actually SAW this problem "live" for the first time (Issue #2) and saw it happen.  The repair specialist did not know what to say nor where the problem is coming from.  He had NO clue.  Luckily, these two issues pop up only about 25% of the time in a given month, but it is still too much.  Is there any way to run any better tests to see why this happens?  Not sure what they (or I) can do as they have given up. I strongly believe this is an equipment issue on their end as we have tried all options on my end.  Any ideas?
ArtG2521Asked:
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Lucas BishopClick TrackerCommented:
So this is happening on your desktop, but not on your iPhone?

Have you seen this occur on any other devices (PC, mobile, etc) while on your internal network? If not, sounds like it may be isolated to your actual desktop in which case no amount of re-wiring, modem swapping, etc. will fix it.
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ste5anSenior DeveloperCommented:
Ask the provider, whether they have or can setup a test server at the first hop in their network. Then you can measure the speed and latency.
This should give you the clues, whether the problem is on "the last mile". This could be bad wiring, as already mentioned, cross-talk when your on copper or bad fibers.
Also take a careful look on the latency. 1G llnes can require special setup on the NIC of your devices or routers in between (etc. frame size).

And use a Linux/BSD distro, cause Windows/Mac OS does a lot in the background, which can add variance to your measurements.

And last, but not least, change the modem (to a different manufacturer model), cause many claim to be capable, but have glitches (happeed to with 2 devices last year, the third was fine then).
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JohnBusiness Consultant (Owner)Commented:
I had similar problems (not anywhere as bad) and my ISP replaced my Modem today. So far, so good. Looks all fine. However, only time will tell.
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ArtG2521Author Commented:
Lucas, this happens on all computers whether wireless on 2 laptops or wired with cat6 on 2 desktops in my house.

ste5an, #1 - I will ask BlueStream about setting up a test server.  This sounds good.  #2 - I do not have Linux and really don't want to get involved with a new OS I know nothing about.  #3 - I do not remember what model modem number 1 and number 2 were, but then they switched me to number 3 which was a Technicolor modem and then they gave me number 4 which is my present one I have now, a 2nd Technicolor: Technicolor Model number CGM4231MDC.

John, I keep saying "time will tell" thru 4 modems.  Unfortunately, time has NOT helped (LOL)
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Lucas BishopClick TrackerCommented:
1.) Is your modem WiFi enabled? Or is your modem separate from your WiFi router? If so, what model router are you using?

2.) Do you have any IoT devices on your network? Smart Tv, surveillance camera, etc? If so, can you disconnect them from the network and still reproduce the issue?
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ArtG2521Author Commented:
The modem is the typical all-in-one modem/router that most companies use.  It is NOT hooked up to any smart TV, surveillance camera, etc Just laptops, desktops and cell phones.
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Lucas BishopClick TrackerCommented:
If that's the case, I'd follow the previous recommendations from John & Ste5an -- swap that router out, preferably for an entirely different brand.
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ArtG2521Author Commented:
I may be stuck with the modem/router they use and I have NO idea what a better one is anyway, unless you have suggestions. I'm all ears.

I have talked with the tech support manager at BlueStream and they are (say) committed to find the problem and are (apparently) going to take ste5an's suggestion on troubleshooting plus other methods.  I shook them up a bit as they realize I am NOT a novice and have guru's (you guys) behind me.  Thanks so much to you all, I will fairly award points now.
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ArtG2521Author Commented:
Already left comments, but thanks again.
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JohnBusiness Consultant (Owner)Commented:
Thanks for the update.
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