How to Fix Major Minecraft Chunk Errors?

I've got the Archimedes Ship Mod, TooManyItems and Forge but that's it. Ever since I got these, I started to experience MAJOR chunk errors. It's really obscurring my vision in the game and I'm desperate to find a solution.

Attached is a sample of some of my chunk errors. I don't fall through the chunks but the top layers of blocks never load in.
image

Try f3+a (press at the same time)