More gc time on main thread since Mar 26

[twoeths]

Describe the bug

gc time has increased since Mar 26 on main thread, this happens on unstable group

when I review related PR, it's possible increasing seen_ttl caused it https://github.com/ChainSafe/lodestar/pull/6569/files

however that change should only affect the network thread, and actually network thread gc time decreased since Mar 26

Expected behavior

gc should be the same, or find out the reason

Steps to reproduce

No response

Additional context

No response

Operating system

Linux

Lodestar version or commit hash

unstable

[twoeths]

Cache size decreased significantly

that forced main thread to receive more messages

that was due to we changed the seen_ttl in second instead of ms

[twoeths]

cache size is increased as expected on unstable mainnet node