Latency fix for Localserver (Vanilla)

[shadow1433]

Computer specs:
Processor - Intel Core i5-4460 @ 3.2GHz
RAM - 8gb RAM
GFX - NVIDIA GeForce GTX 750
GFX settings - 2GB Dedicated Memory of 4GB
Memory - 1TB Space
OS - Windows 8.1

Summary: I believe that my whole issue lies in my operating system. I'm trying to run a 1.12 Single Player Project locally on my PC. The Legion SPP I have downloaded has zero latency lag whatsoever. (Frame rates are not an issue whatsoever btw.) However when I try to run ANY 1.12 emulator whatsoever, it has tremendous latency lag. I moved the repack and client from my desktop to my Program Files in my C: drive and it asked me for permission to access networks upon restarting it. 1 time I ran it, it had no lag at all. All I did was change the IP using their application that came with the repack to the "Offline" setting and ran the x64 servers and not the x86, ran perfect for about a half hour.

If you need to see any of my settings, please include how to paste them on here? I'm not forum-savvy.

Anyways, this is beyond frustrating. Someone please help!!
(PS the client I'm using for the 1.12 emulator is the retro-wow 1.12 client. NOT advertising just wanted you to get more details)

[Nadromar]

Latency lag doesn't exist when you're connected to your own computer. So your computer is probably lacking resources in some way.
Have you checked if you're capped out on ram while this is happening?