I have problems with loading my site. Time to first byte varies from 0,5 to even 10s. I can't find what may cause that lag in back-end processing.
My site : www.mm.bartoszwasz.pl
Test with GMetrix https://gtmetrix.com/reports/mm.bartoszwas.pl/SdPhlpjs
What i already did:
- Hosting response test -
ping www.mm.bartoszwas.plgave me result of 15ms
- Putting small php file into my child-theme to check access time (15ms) https://mm.bartoszwas.pl/wp-content/themes/storefront-child/test.php
- Links changed to HTTPS from normal HTTP - to avoid redirects.
- Links in wp-config and database updated to HTTPS
- Disabled plugins
Is anything else i can try?