Connection drops right as a bonus round lands are absolute mood killers. I had that exact issue last week on a heavy graphics slot, where the screen froze right on the third scatter. Switching off my Wi-Fi to mobile data mid-session usually helps clear the lag for me. Lately, loading sessions through https://vegasherologin.com/en-gb/ has been smooth with no freezing during feature triggers tonight. My advice is to clear your browser cache before starting any long session, especially if you play slots with heavy animations.