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.
#include <chain.h>
#include <core_io.h>
#include <interfaces/chain.h>
#include <key_io.h>
#include <merkleblock.h>
#include <rpc/server.h>
#include <rpc/util.h>
#include <script/descriptor.h>
#include <script/script.h>
#include <script/standard.h>
#include <sync.h>
#include <util/bip32.h>
#include <util/system.h>
#include <util/time.h>
#include <validation.h>
#include <wallet/wallet.h>
#include <wallet/rpcwallet.h>
#include <stdint.h>
#include <boost/algorithm/string.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>
#include <univalue.h>
int64_t static DecodeDumpTime(const std::string &str) {