Now Newcastle has been eliminated from the Champions League but their performance has not improved. I don't think Newcastle stage fright in the UCL has had an impact on the EPL, Newcastle performance declined because they were unable to maintain the best game that occurred last season.
The Premier League is very competitive this season, you can see for yourself how the big teams compete in the top four positions. Newcastle needs changes in its team to improve its performance, I doubt Newcastle can repeat last season's success if there is no improvement in performance.
No improvement still, really bad performance from the Magpies, they need to sit up if they want to continue winning, that's how to stay ontop of the table. The elimination of Newcastle from UCL weakened the club and that poses strong doubt for the players and the manager, even affects the supporters. Newcastle united have no solid stands in the UEFA Champions League, they only cough but they can't bark like a competitive club in the league. Eddie Howe have tried but he just can't withstand the pressing pressure from elite and mediocre teams.