Recently my friends and I have been playing on a server with relatively few issues. There would always be a tiny bit of block lag (chests didn't immediately open and chat did not update live, rather in one large burst when the lag was done; I would occasionally get glitched back to the block I teleported to if I tried to move) when teleporting to and from places, for me, but it always cleared up within a moment or so. I have played on this server for about a week with these minimal issues.
However, in the last day or two, I have been completely unable to play due to block lag, and I'm the only person having the problem. Chests take 30+ seconds to open and I usually have to try several times to move an item between my inventory and the chest. Chat updates as if it's updating live, but it has hat 30 second delay as well (i.e if I type and send a message, others see it live but I can't even see myself say it for quite a few moments). I can walk around just fine, and strangely enough doors open and shut mostly as they are meant to. I was trying to plant some crops and I wouldn't get the little shrubby noise for, again, another 30 seconds. I watched a zombie pathfind to a place I had been several moments ago, and while I was standing nowhere near the zombie, I suddenly took several points of damage in extremely rapid succession. I swung at the air a few times and the zombie died, even though the zombie was out in my yard and I was far back in my house.
It's bad.
And like I said, it seems like I'm the only person having this issue. My friends have no issues playing, nor do the other people on the server. The mods have rebooted the server for me a few times and it has not had any effect. I have rebooted and optimised my PC and it has had no effect. I can connect to any other server just fine, running perfectly with no input lag or block lag.'
Does anyone have any idea what might be wrong? Any help at all would be greatly appreciated.
COMPUTER SPECS
AMD V140 Processor 2.30 GHz
2.00 GB of RAM with 1.74 GB usable
64-bit Windows 7 Home Premium OS