No more damage at a certain point on Endurance

Hello GCL friends,

I play with the Premium Edition and I am level 495.
There’s a strange thing that happened lately.
I was on field B9, playing Endurance and when I got at wave 91, there was no more damage done on monster anymore. I clicked on the ahead monster and its hit points weren’t going anymore, not even a single point.
I know when it’s happening because the sound of the bombing changes slightly.
When I hear that sound change I know there won’t be any damage anymore.
It happens when there’s a lot of monsters on screen, here there was about 3450. Could it be my computer? (I’m on a Mac)
I tried to find a topic on this forum talking about this but couldn’t find any.
I talked about this with other friends who play GCL and nobody ever experienced this bug (I guess it’s a bug)

Please let me know if you have ever experienced this.
Thanks in advance!

Sounds like you aren’t getting past their armor. If you are summoning that many monster you will easily drive the armor up to a point where damage of shrines has no effect. Is that the bombing you are talking about?

No effect depending on the level and color of gem you are dropping that is…