find the folder js inside the K2 folder, then for each .js.php file comment out the ‘require(….. wp-blog-header.php)’ line and replace ‘!get_settings(’gzipcompression’)’ with ‘( ob_get_length() === FALSE)’. After that the first few lines should look like this:

//require(dirname(__FILE__)."/../../../../wp-blog-header.php");
// check to see if the user has enabled gzip compression in the WordPress admin panel
if ( (ob_get_length() === FALSE) and !ini_get('zlib.output_compression') and ini_get('output_handler') != 'ob_gzhandler' and ini_get('output_handler') != 'mb_output_handler' ) {
ob_start('ob_gzhandler');
}

Then add the following lines on the top of the files livesearch.js.php and rollingarchives.js.php after the php tag:

// Echo a translated string.
function _e($text, $domain = 'default') {
global $l10n;

if (isset($l10n[$domain]))
echo apply_filters(’gettext’, $l10n[$domain]->translate($text), $text);
else
echo $text;
}

For livesearch.js.php, comments.js.php:
replace all
bloginfo("template_url")
with
echo str_replace($_SERVER['DOCUMENT_ROOT'],'',realpath(dirname(__FILE__) . '/../'))
There are two instances of these in comments.js.php, and one in livesearch.js.php.

After all these the pages will refresh very fast.

Original post in which this guide is taken from…