Also if u are playing with youtube on, u gonna lag for sure. When I recorded gameplay on Chrome, only FFT was running in browser, cleaned it before that, fullscreen, recorder and game smooth as web player. Note that I did lag while recording in web player and that's why I actually avoided to rec stuff, especially while playing Gunner-sniping. Then I tried without cleaning cache, with youtube on and on every song switch had pretty heavy lag. 2 days ago FFT was updated with new build that reduced lag and I really don't understand how ppl with better PC/net than mine are facing lag while I don't.
If hits on u and enemy late, it's easy to notice - shield fx is showing blue color for reciving/doing dmg on force field and it changes color to red if there is dmg on hp. If there is delay on server, color not gonna change and will stay blue (and u gonna die with full ff bar).
Pingers do delayed dmg, as u can see and always used to be like that, ppl who has 350 ping clearly got potato net/pc AND play on a wrong server.