withClaimedRewardsEras, rate limit exceeded

[ironoa]

related to https://github.com/polkadot-js/api/issues/5859

api.derive.staking.query(validatorAddress,{withLedger:true, withClaimedRewardsEras: true})

seems to be so heavy that I get a RPC-CORE: queryStorageAt(keys: Vec<StorageKey>, at?: BlockHash): Vec<StorageChangeSet>:: -32999: RPC rate limit exceeded error message when I'm connected to a public endpoint. Kusama node (v1.13.0).

• If I set withClaimedRewardsEras: false it works on a Kusama public endpoint (i.e. wss://kusama-rpc.polkadot.io/), but of course I'm missing info
• I can get past to this issue when I'm connected to my internal node, withClaimedRewardsEras: true, but still it takes roughly 13 seconds for 1 address
• Polkadot doesn't seem to have the same issue: I can make the query with withClaimedRewardsEras: true set on internal and public endpoints with no problems

Not sure that's expected, so I'm opening this issue...