no i am not on a server and i couldve sworn i had fastcraft installed but i didnt. im gonna add it and see if this issue goes away
If you are not in adventure and you described as you have tick rate issue. You could try installing opis and see whats slowing down. Do you have problem with other Tech modpacks. Did you try to create a new world.
Also since new version you had a crash. Maybe a crashlog would answer your problem. Can you post your crash log to http://paste.feed-the-beast.com
http://forum.feed-the-beast.com/threads/your-logs-and-you-what-you-need-to-know.36509/