Yeah get some proper impact rated bits and preferably switch to Torx. Philips and impact aren't the best of buddies.
Mixing up Philips and Posidrive shortens the life of the bits considerably too, as do screw heads that aren't quite standard posidrive.
I tend to treat bits as disposable and buy packs, which work fine in a domestic setting.
@NotThamesWater started
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Yeah get some proper impact rated bits and preferably switch to Torx. Philips and impact aren't the best of buddies.