How much battery time you get with 10-bit on ?? I tried it once during a dive recently and my battery went down very fast.
I usually use similar settings to yours but in Extended Battery mode (10 bit recording is not available with Extended Battery mode) and with those I can end a typical dive (recording here and there short clips only - not the whole dive) with ~50% battery left, hence I could marginally do two dives out of a single battery. With 10 bit recording (no battery saver) I couldn't even finish a normal dive.
Keep in mind that I'm pretty new to all these, so the issues with the battery might be something else I missed. I've got my hero 11 pretty recently and I haven't managed to dive with it as much as needed to experiment enough.