If your problem is the freeze from writing text, you can try using /fupdate
Each time your mirc begins, it forgets the /fupdate setting and reverts to 0
You can put a /fupdate 100 in the ON START event to make screen writes faster.
If it's too fast, can change to another number in the 1-100 range.
Without a number parameter, /fupdate tells you the current setting.
