950+ is “armor”?
Which boss and which of their damages is it? Is it avoidable damage? Like Andy’s fire beam and lightning sweep? Grigoires lightening beams?
Are there any bosses your defences are standing up against and then the issue becomes getting things dead?
If your dps is too low your defences are going to be put to the test that much more than if you get stuff dead fastish.
Is your build fully custom or are you following a guide? If guide; which build?