Set all sliders under the "Advanced Graphics Options" category to 0, along with unticking all checkboxes in said category (FOV doesn't matter)
Lastly, in the "Particle Options" category, set 'Max Falloff' to 10.00 and 'Falloff Distance' to 5.00
I'm pretty sure that's all you can do via the Advanced Options tab to speed up the game
Also, if you really want to squeeze the FPS from Blockland, you should just set the resolution to the lowest it can go
You'll probably have a hard time playing, but I'm assuming that you either are playing on a potato, or are not going to actually play this Blockland instance