Hello, Claudio
1/ We have set up the Customizer -> Speed Optimization for improved speed. We recommend the following settings for it:
https://prnt.sc/uKauGbEi41o0
https://prnt.sc/COHlbIbyPZQk
https://prnt.sc/C_DumlXg95Tr
https://prnt.sc/_Ppadug33eBN
2/ We’ve activated and configured W3 Total Cache plugin. We recommend the following settings for it:
https://prnt.sc/lfuL_J2Xup6r
https://prnt.sc/aZZ_dR6u5eZh
https://prnt.sc/O_sbJmiudZ4f
https://prnt.sc/Z-TrVY_FdPIf
https://prnt.sc/8XwIByHPgG9j
You can activate other settings also and test them to achieve better results, but do not activate – https://prnt.sc/UOIoz6YHIze2 , to prevent the problem.
Kind Regards,
8theme team