We recently are experiencing issues where our website is taking over a minute to load and when looking into the webpagetest results to see what can be causing the issue, a new (we believe it to be new atleast) thing that is displaying and being the clear culprit is after loading the domain, it goes into loading gstatic.com/generate_204 which almost appears to time out everytime, then everything after that loads in.
The CPU utilization seems to be fluctuating the whole time as it tries to load as well so something is going on, I am just not sure exactly what. (The generate_204 may not even be the issue, but it does appear new as we run tests all the time and looks to be whats causing the issue in our eyes)
I am unaware of what this generate_204 is, and when googling it, you see a lot of it being a type of malware or similar that you remove from your computer, but this seems to be on my website (maybe within the files) that is now suddenly trying to load on all pages and destroying its load time.
Does anyone know what this may be, how we could possibly find it and remove it? -- And if this may not be the problem, any ideas on better ways to determine the possible culprit?
For reference, the website is a Magento webstore. Thanks!!
UPDATE in response to @Trich's comment;
After running the same webpagetest on a firefox browser, it had the same delay but a different trickle down loading sequence;
Looking into what the
http://website.com/.well-known/http-opportunistic could be, it appears those are security measures my hosting company has put in place?
Other than that, everything else looks the same with the same extreme long delays... So my next only thought would be to start disabling extensions one by one to try and see if one may be the culprit with my Magento store? (Even though I haven't added much new modules in a while)
Latest test going directly from HTTPS;