How have you allowed you main 'end game's pvp campaigns preformance to drop so drastically?
No, it is not my internet, or saved data, it's on your end.

Press skills and they do not respond, using abilities has turned into RNG, combat is a guessing game, it's horrid.
When a skill like dizzying swing is used my character holds it behind his back for 3-4 seconds before actually following through.
Spammable instant skills feel like they have a 1.5 second cast time, and this has been going on for months, some would argue years, but it's never been THIS bad.

Your 'preformance patch' fixed the blue screens that were introduced the previous patch, but that was it... Gray host is unplayable if you actually want to PLAY, at the moment it's left to large groups that smash one button on their controller repeatedly and wait to see what happens.
Fix the preformance, focus on it. We don't want the shiney things right now, make the game actually function.
I for one would buy crowns and stuff if the game worked, but it's so broken I'm just waiting for it's downfall at the moment, it doesn't feel worth spending extra money on because the game population could stop tommorrow, the people are getting tired of the bad preformance and looking elsewhere to spend their money