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.
}
            if (block_hash == stop_block) {
                break;
            }
            {
                auto locked_chain = chain().lock();
                Optional<int> tip_height = locked_chain->getHeight();
                if (!tip_height || *tip_height <= block_height || !locked_chain->getBlockHeight(block_hash)) {
                    
                    
                    break;
                }
                
                block_hash = locked_chain->getBlockHash(++*block_height);
                progress_current = chain().guessVerificationProgress(block_hash);
                
                const uint256 prev_tip_hash = tip_hash;
                tip_hash = locked_chain->getBlockHash(*tip_height);
                if (stop_block.IsNull() && prev_tip_hash != tip_hash) {
                    
                    progress_end = chain().guessVerificationProgress(tip_hash);
                }
            }
        }
        ShowProgress(strprintf("%s " + _("Rescanning..."), GetDisplayName()), 100); 
        if (block_height && fAbortRescan) {
            WalletLogPrintf("Rescan aborted at block %d. Progress=%f\n", *block_height, progress_current);
            result.status = ScanResult::USER_ABORT;
        } else if (block_height && chain().shutdownRequested()) {
            WalletLogPrintf("Rescan interrupted by shutdown request at block %d. Progress=%f\n", *block_height, progress_current);