Creating too little post images

I created a pipe for RSS to Post with image downloading. The RSS has 20 entries. The pipe works fine in test mode it will create all 20 posts with images uploaded but when in cronjob it’ll only create 3-4 posts at a time so on the next scheduled cronjob it’ll resume from previous session. I kind of assume that the script is timing out in cron cli mode where as if I access the the cron link via web it’ll create all the posts just by increasing the max_execution_time in php.ini setting. Is there a setting that I need to increase for it to create more posts/upload images in cron cli?