Try Smaller Id Sizes

[philzook58]

From our conversation: This a possibly silly micro-optimization, but it is easy to try switching from Int64 ids to UInt32 or Int32 ids.

[0x0f0f0f]

It seems to stop working with Int32. I have to investigate

[0x0f0f0f]

#177 uses UInt64 as ids and it can be easily resized to UInt32, but i doubt it will introduce a speedup