Can someone explain why my dps drops with better item

Hi.
I’m using physical build through forcewave. Recently i found a new ring which is better than my currently equipped. When i changed equipment i lost around 2k dps but all stats grow up. Is it a bug or i missed something?

Attachment: stats.jpg
Attachment: old.jpg
Attachment: new.jpg

The previous ring had cast speed and forcewave is a spell, so now your forcewave hit for more damage but less frequently which is a loss in dps (but you hit for more dmg, so it may be still worth using it… you have to make some tests on the field).

Oh, thanks. I think that forcewave is a regular attack.