So whenever I play sg, I get a ton more lag than usual.
When I am doing anything outside of sg, including eff 7 mining without picking up any stone, only ores, I get 0 lag. But once I step into SG and start doing anything, I get huge lag spikes. To add on to this, whenever I try to PvP, I get like a 2 second lag spike that goes away for like 40 seconds.
Is there any way to fix this, or am I stuck with it until I get better internet/wifi adaptor?
Here is a Speed Test of my home internet to Chicago (Where the server is hosted, I believe), at the time of the lag

Spoiler: Speed Test DURING Lag Spikes of SG

PC Specs:
PCPartPicker part list: http://pcpartpicker.com/list/yMsK6h
CPU: AMD FX-4100 3.6GHz Quad-Core OEM/Tray Processor
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler
Motherboard: Gigabyte GA-78LMT-S2 Micro ATX AM3+ Motherboard
Memory: Samsung 8GB (2 x 4GB) DDR3-1333 Memory
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive
Video Card: Sapphire Radeon HD 7870 GHz Edition 2GB Video Card
Case: NZXT Phantom 410 (White) ATX Mid Tower Case
Power Supply: Rosewill Hive 750W 80+ Bronze Certified Semi-Modular ATX Power Supply

 

That's not it, when PvPing my Memory never went above 500MB out of 9,102MB

 

Upgraded to 10GB RAM Allocated, and downloaded Optifine, still have the same lag.
My PC Specs are:
PCPartPicker part list: http://pcpartpicker.com/list/yMsK6h
CPU: AMD FX-4100 3.6GHz Quad-Core OEM/Tray Processor
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler
Motherboard: Gigabyte GA-78LMT-S2 Micro ATX AM3+ Motherboard
Memory: Samsung 8GB (2 x 4GB) DDR3-1333 Memory
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive
Video Card: Sapphire Radeon HD 7870 GHz Edition 2GB Video Card
Case: NZXT Phantom 410 (White) ATX Mid Tower Case
Power Supply: Rosewill Hive 750W 80+ Bronze Certified Semi-Modular ATX Power Supply

 

I am pretty sure it is connection lag, as my computer has no problem with Minecraft.
Jamie said that ethernet would probably help it, and i am getting one in about 4 days