Bug Settings that cause lag

[Orreven]

I tried to play this game again recently, and I found a few settings that cause horrible unbearable lag. Without these settings on, but with 1080P and all other sorts of options maxed or near maxed I maintain 120 fps. With these settings on, I drop to either 4 or 10 fps. These settings are:
Preview block to build (10 fps)
Normal/bump mapping (4 fps)
Any level of anti-aliasing (4 fps)

My computer has:
Two 4 gig sticks of ram (dual channeled) (3 reserved for the game)
An AMD 3.4 gigahertz 6 core processor
An AMD HD Radeon 7700 HD graphics card
A 2 TB hard drive
Windows 10
Java 8 version 51
V 0.19361 of the game
I list these in case any of these are problematic for the game

Also, I would post this on the bug tracker, but I can't connect to that right, and I don't feel like waiting for a connection.

 

[Megacrafter127]

Also, I would post this on the bug tracker, but I can't connect to that right, and I don't feel like waiting for a connection.

The bugtracker was switched. That is the reason why you can't connect to the old one anymore. Use http://phab.starma.de instead.

 

[SmilingDemon]

And do not get confused by things that do cause lag and those that cause to drop your systems performance.
Drops in FPS are not lag