solved activity stream speed issue

solved activity stream speed issue
Please add valid phpdoc header.
You may use this template for example and also learn from code in this file:
```
/**
	 * [getUserDetailMini description]
	 *
	 * @param   [type]  $userID     [description]
	 * @param   [type]  $frontUser  [description]
	 *
	 * @return  [type]              [description]
	 */
```