I have been through all of the standard things for speeding up magento 1.8:
Installed APC as an opcode cache using recommended settings Enabled caching and compression in apache.
Am using Argento theme.
What else can I do?
Was looking at varnish and redis but not sure if these are appropariate for a site with small catalogue and seems like there must be other simpler things I can do.
How can I debug where the problem is, page speed insights says slow server response and I get only 52 on the page speed insights score.
Any help on how to debug this gratefully received.
UPDATE: Testing page speed insights over time it seems there is a high variability over weeks as to what score is achieved. I'm wondering if that means it is down to the server rather than magento site alone. Anyone?