I'm on stock Android 4.4.4 with root. I'm using the native app for text messaging and lately is has become really slow. My suspicion is I have too many multimedia messages so I lowered the multimedia message limit to five per conversation. I have been using the phone for a couple days now and when I scroll thru the messages, I can see that there are many more than five multimedia messages in each conversation. I have the "delete old messages" option checked so shouldn't any older multimedia messages be automatically deleted once the limit of five is reached?