Freezing issues on Instagram Mega Bot

Hello, good evening!

I'm having some freezing issues on Instagram Mega Bot. After a few (sometimes 30, sometimes 120 and sometimes reaches 250. It is completely random!) comments made correctly, the browser freezes!

My current settings on Instagram Mega Bot is:
Master Delay - seconds: 600
Run When Complete: 7
Random Wait 1: 39
Random Wait 2: 60
Stop The Bot At: 250
Set User Agent String: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.111 Safari/537.36
Wait Before Next Request: 12

I'm doing 7 comments by keyword. My keywords file has 19 items. The version of Instagram Mega Bot I have installed is v6.29

My computer:
Intel Core 2 Duo E8500
4 GB RAM
Windows 8.1 64bit updated
GeForce GTX 770

Thanks

Mine is not working as well... i have to stay looking at it all the time, refresh manually... and every day new update !!! im really pissed