Friends' PC: Friend's PC: i7 3930k (stock clockspeed), 16gb hyperx 1600mhz (quad channel), dual gtx 970s in sli, gigabyte x79-ud3, enermax platimax emt1000 psu, crucial mx100 512 & adata sp900 256 ssds, all of that in a fractal design xl r2 case, Java 8 (didn't fit in Environment)

Even though both of our computers are powerful (my friends PC is better though), we still get "server overloaded" or "chunk ticks" after the 1.7.10 update, causing stuttering which may be helped with by installing Forge and Fastcraft. However, the problem still remains a bit with these mods.

In Minecraft 1.8 the stuttering is less and I don't get as much chunk popin as I do in 1.7.10, but it's still there.

Friends log: http://pastebin.com/KrhJbChW
My log: http://pastebin.com/Gf96XeTA

I can run ARMA 3, and I see no reason why our PCs can't run a server integrated with a client, even though it's much powerful. Maybe it's the integrated's server problem?