MP Server (Rented). Player Jitter when standing

Does not jitter during crouch. Possible jitter during movement, but nearly undetectable.
Note: Jitter occurs while in walking mode, but not in running mode.

Computer Information:
Motherboard: Gigabyte Technology Co., Ltd.

Processor Information:
CPU Vendor: AuthenticAMD
CPU Brand: AMD FX™-8320 Eight-Core Processor (Vishera)
Speed: 3516 Mhz
8 logical processors
4 physical processors

Operating System Version:
Windows 7 (64 bit)

Video Card: Radeon ™ RX 480 Graphics - 8 GB

Sound card:
Audio device: Headphones (High Definition Audio Headset)

RAM: 32573 Mb

Press Backspace to exit “walk” mode and enter “sprint” mode, it should stop character from jittering when standing still.

I remapped the Backspace key to the Caps Lock key. (something I’m accustomed to using for toggling between run and walk modes).

The jitter occurs only when I’m standing still (I’m sure you noticed this).
and this happens whether I’m inside a structure or outside.

When I select run mode (pressing the Caps Lock key), the jitter stops.

Also, one other thing I noticed in this is a slight posture change between the walk and run modes while standing still.
In the walk mode, the character stands a bit more “straight” with knees locked.
While in run mode, the legs are slightly bent at the knee joints.

Although it’s a minor difference, it’s enough to affect the standing physics collision on a flat surface.