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.
{
    LOCK(cs_db);
    assert(mapFileUseCount.count(strFile) == 0);
    Db db(dbenv.get(), 0);
    int result = db.verify(strFile.c_str(), nullptr, nullptr, 0);
    if (result == 0)
        return VerifyResult::VERIFY_OK;
    else if (recoverFunc == nullptr)
        return VerifyResult::RECOVER_FAIL;
    
    bool fRecovered = (*recoverFunc)(fs::path(strPath) / strFile, out_backup_filename);
    return (fRecovered ? VerifyResult::RECOVER_OK : VerifyResult::RECOVER_FAIL);
}
BerkeleyBatch::SafeDbt::SafeDbt()