Yeah, I'm going to say that lots of clients, probably including Orape & CrazyClient, do not recognize Ice Sphere's or Shatters Fire Bombs quick enough to be able to save you within the short amount of time you have to live... Especially if your settings are set on something that is lower than around... Let's say 20%. Since it's so low, it needs time to register within the client, which quick moving, high-damage bullets do not allow the client to do.
So I suggest you should:
1. Auto Nexus set to 20% or above
2. Make sure your system is operating as quick as possible
3. Maybe try out some new keybinds?