JavaScript process HTML response

This is a function from a Tampermonkey userscript that I use. I am not the author of the original script, but I am trying to make some modifications to it. The script adds output to an HTML page depending on the original response. When I try to add an if() statement to only append certain text for certain responses, the script becomes very sluggish on large pages. Is there a better way to handle searching the HTML response for specified text? I will comment the section in the code that I am hoping to improve:

function processResult(result) {
    $.each(result, function (i, resp) {
        var row = torrentRows[i];
        var link, newWin, playerUrl;

        if (row.isAdding) {
            return;
        }

        row.actions.empty();
        if (resp.status == 'downloaded') {
            // Play
            link = $('<a href="#">▶</a>');
            link.click(function (e) {
                e.preventDefault();
                playerUrl = 'http://ipaddress/player/?playlist=playlist/' + resp.id;

                if (navigator.userAgent.indexOf('Firefox') > -1) {
                    newWin = window.open(playerUrl, 'player', 'height=670,width=400,menubar=no,status=no,toolbar=no');
                } else {
                    newWin = window.open('', 'player', 'height=670,width=400,menubar=no,status=no,toolbar=no');
                    newWin.opener = null;
                    newWin.location.href = playerUrl;
                }
            });
            row.actions.append(' ');
            row.actions.append(link);

            // Download
            link = $('<a href="' + downloadUrl + resp.id + '">↓</a>');
            row.actions.append(' | ');
            row.actions.append(link);
        } else if (resp.status == 'downloading') {
            row.actions.text(Math.floor(resp.progress * 100) + '%');
        } else if (resp.status == 'missing') {
            // Add
            link = $('<a href="#">GET</a>');
            link.click(function (e) {
            e.preventDefault();
            if (confirm('Are you sure you want to download ' + resp.id + '?')) {
                row.actions.html(loadingImg);
                row.isAdding = true;
                addTorrent(resp.id, function (addResult) {
                    row.isAdding = false;
                    if (addResult.success) {
                        var htmlTitle = $('<b>').text(addResult.title).prop('outerHTML');
                        noty({
                            text: 'Torrent ' + htmlTitle + ' added successfully!',
                            type: 'success'
                        });
                        row.actions.text('OK');
                    } else if (addResult.error_code == 'already_added') {
                        var htmlTitle = $('<b>').text(addResult.title).prop('outerHTML');
                        noty({
                            text: 'Torrent ' + htmlTitle + ' already added!',
                            type: 'warning'
                        });
                        row.actions.text('ERR');
                    } else {
                        noty({
                            text: 'Error adding ' + resp.id + ': ' + addResult.error,
                            type: 'error'
                        });
                        row.actions.text('ERR');
                    }
                });
            }
        });
        row.actions.append(' ');
        row.actions.append(link);

/* This section to analyze. Commented rows cause slow performance. */
        //var $row = row.row.context;
        //var str_text = $row.innerText;

        //if (str_text.indexOf("FLAC") >= 0)
        //{
            // Transcode request
            link = $('<a href="#">TC</a>');
            link.click(function (e) {
                e.preventDefault();
                if (confirm('Are you sure you want to request transcode for ' + resp.id + '?')) {
                    row.actions.html(loadingImg);
                    row.isAdding = true;
                    addTranscodeRequest(resp.id, function (addResult) {
                        row.isAdding = false;
                        noty({
                            text: addResult.message,
                            type: 'information'
                        });
                        row.actions.text('OK');
                    });
                }
                });
                row.actions.append(' | ');
                row.actions.append(link);
            //}
/* END section to analyze */
        } else {
            row.actions.text(result[i].status);
        }
    });
}

EDIT:

Or, is there a way to make this function asynchronous? I don't mind how long it takes, besides the fact that it locks up that browser window.