Performing the following (note the range of 10,000):

`importmulti '[{"desc": "sh(wpkh([aeee1e6a/49h/1h/0h]tpubDC5bVdaveQYxGFztMShFAjU637kKjrs9FD8ne1oHR7z8tLeQJExsaxWRVeSpcCcYMdp5ecf2LQhuVaeYFZ7YEpvWTJr4nDGUJrmuvLuTSsp/1/*))", "keypool": true, "timestamp": "now", "watchonly": true, "internal": true, "range": {"end": 1000}}]' '{"rescan": false}'`

takes many minutes. @achow101 reports a similar import taking 6 minutes on his machine.
std::string wallet_name = GetName().length() == 0 ? "default wallet" : GetName();
        return strprintf("[%s]", wallet_name);
    };
    
    template<typename... Params>
    void WalletLogPrintf(std::string fmt, Params... parameters) const {
        LogPrintf(("%s " + fmt).c_str(), GetDisplayName(), parameters...);
    };
    
    bool GetKeyOrigin(const CKeyID& keyid, KeyOriginInfo& info) const override;
};
/**
 * Called periodically by the schedule thread. Prompts individual wallets to resend
 * their transactions. Actual rebroadcast schedule is managed by the wallets themselves.
 */
void MaybeResendWalletTxs();
class CReserveKey