Depends on your needs. When i'm really concerned about deserialization time, i try to skip it entirely. Partial|Total zero copy deserialization is the thing to reach for. Various libs exist, https://rkyv.org/ is what i've been toying with recently.

For those unfamiliar, here is the interesting bit:

> rkyv implements total zero-copy deserialization, which guarantees that no data is copied during deserialization and no work is done to deserialize data. It achieves this by structuring its encoded representation so that it is the same as the in-memory representation of the source type.