Issue description:

using sort by invtweak will freeze the game.just

What happens:

What you expected to happen:

Steps to reproduce:

1.having 300+ diff item
2.using sort by invtweak in gui
3.game down!
...

Version (make sure you are on the latest version before reporting):

• Minecraft:1.12.2
• Forge:14.23.5.2836
• Refined Storage:1.6.14

Does this issue occur on a server? [yes/no]
no

If a (crash)log is relevant for this issue, link it here:

[pastebin/gist/etc link here]

Not much we can do here, RS falls back to InvTweak's algorithm for comparing stacks.