Firstly I'd like to thank you for helping.
Secondly is there anyone who'd be willing to add me on skype and walk me through fixing this? I have tried googling every possible solution and nothing has worked.
When I join a tekkit server made and hosted by my girlfriend, I spawn in and fall forever. Or what seems like forever. Eventually I stable out and see all the terrain. But everything is unresponsive. I Try opening chests, and I get nothing. About a minute later every chest I tried opening, opens all at once in quick succession. Other friends are able to connect and play on the server just fine. When I bring the EXACT same PC to my girlfriends house, I'm able to play with 0 problems. I've reinstalled 2 times. Obviously a connection issue. I port forwarded 25565 I disabled all firewalls on my computer AND router. What am I missing? there has to be something. I play league of legends no problem. Titanfall no problem. EVERY other game has no problem but minecraft.
I can play every other game completely fine.. so i dont think its a hardware problem. It was fine the other day. I turned off my firewalls, reset the router and it worked for a day. but now its back to doing it again.