Sync from checkpoint take much time

[linhha796]

I do follow the instruction on docs to set up an Ethereum node, but it took me more than one hour to sync header from a checkpoint.

Step to reproduce:

• Generate an account:
  clef newaccount --keystore geth-tutorial/keystore
• Start clef
  clef --keystore geth-tutorial/keystore --configdir geth-tutorial/clef --chainid 11155111
• Start execution client:
  geth --sepolia --datadir geth-tutorial --authrpc.addr localhost --authrpc.port 8551 --authrpc.vhosts localhost --authrpc.jwtsecret geth-tutorial/jwtsecret --http --http.api eth,net --signer=geth-tutorial/clef/clef.ipc --http
• Download state genesis from Github and run consensus client:
  prysm.bat beacon-chain --execution-endpoint=http://localhost:8551 --sepolia --jwt-secret=jwtsecret --genesis-state=genesis.ssz --checkpoint-sync-url=https://sepolia.beaconstate.info --genesis-beacon-api-url=https://sepolia.beaconstate.info