Many webpages can't finish loading in 5.4

[Cyrix]

Sometimes they stay on Loading forever.
This didn't happen in 5.3.1, where the same website is always able to load completely.
This is my main website and the hardware side is stable.

Setting timeout is the last thing I want to do, as I never needed that in 5.3.1.

 

[rostonix]

Can you provide link?

 

[Cyrix]

PM sent.