Minecraft specific chunks arent loading

I've had this bug before in FTB Unleashed. Be sure to update AE as recent as you can without changing to 1.6 (Unhinged is 1.5) from the author's download site; the mod author is very good about releasing frequent updates and bugfixes. I think this has to do with the crafting monitor itself. I don't believe I found a permanent solution when I had this, but I did find a workaround. Try hooking up all parts of your ME network to go through a single ME Cable. When it decides to stop building, just break and replace the cable. All build progress will be lost, but the materials used and created so far are kept.

Do the following steps and it should improve your performance.

1. Update/Reinstall Java - Delete your current version and do a fresh install of the latest version.

2. Assign as much Ram as your computer can muster - the more ram that minecraft has to work with the better it will perform, and the less dependant it is on your other hardware. - i go overboard and have assigned 14gb to each of my MC versions. but i have found that 2gb is perfect for vanilla and 4-6 is fine for ftb to have good performance with far view distance.

3. Try reinstalling MC - Backup all your saves and reinstall your .minecraft folder.

4. As an added measure install optifine - the installer is easy to use now for minecraft & doesn't require forge - this should help boost performance a little bit further.

Me personally i would do all the steps above (maybe not optifine depending on whether the others worked) this is quite a big issue to have and without the system specs and java version i have to give a more generalised answer. If this doesn't work i would say that your system can't handle the game on that view distance and you need to lower it.

Let me know if you need more info or if this doesn't work and I can talk you through a more complicated way of improving performance.