Safari
The operation of Safari is becoming erratic, particularly in viewing my online newspaper. Sometimes it does not download some images or comments to articles or clicking on a link produces a tab which fails to completely download and just hangs.
I also have Firefox on my computer which I go to when Safari plays up, showing that the fault is with Safari, not the website.
I have tried all the usual remedies, emptying cache and cookies and deactivating extensions, all to no avail. What else can I try?
iMac 21.5", macOS 10.14