Delayed block production on builder flow

[twoeths]

Describe the bug

After mev-boost returns execution payload, it took ~1.5s to compute state root

Jun-03 22:01:24.079[chain]         ^[[36mverbose^[[39m: Produced beacon block body fork=deneb, blockType=Blinded, slot=9219005, attestations=128, deposits=0, voluntaryExits=0, attesterSlashings=0, proposerSlashings=0, feeRecipientType=cached, feeRecipient=0x388c818ca8b9251b393131c08a736a67ccb19297, blobs=6, blsToExecutionChanges=0, executionPayloadValue=119928262811004670
Jun-03 22:01:25.514[chain]           ^[[34mdebug^[[39m: Computing block post state from the produced body slot=9219005, bodyRoot=0xbd6173928e590b3f279d3647fbfcd22c0c57112fa0f2962da7ae9d934ea45b5e, blockType=Blinded

Expected behavior

Need to figure out which action caused time there (no log between the two), can we improve or add more metrics if needed. Note that there is execution block being produced at the same time

Steps to reproduce

No response

Additional context

No response

Operating system

Linux

Lodestar version or commit hash

v1.18.1