caparros07 replied
Oh i´m sorry! You are right,, actually the problem was JS minify, specifically using non blocking Defer option in <body> (W3 total cache plugin). Turning it to default (blocking) it solved. Altough now my score in Google Insights got lower with this option, the user experience is better. For those who have this issue, you can still use non-blocking options in </head>.
Thank you very much