I aint the only one who is getting the lag spikes actually, at one point in time there was a community building there and we emptied and abandoned it to see if the lag would quit but it hasnt, I ran the world in single player and it actually took care of around 90% of the lag, but I do not get why it would be so choppy when the server is running the world, I have a decent router and I connect to it through a gigibit ethernet switch. Its a tekkit classic server and the mc version is 1.2.5. And come to think of it, I used to run it on a 60gb ssd and I had the same issues with lag, its all concentrated in that one area. Is there a way you could get me a link to OPIS? sadly I have never heard of that, idk why.
PS: I just removed all my plugins that I used and that didnt help either.