OK so I...................realized that I had to disable VSync with a clean config :/
So I disabled that..and now everything runs great c:

Hmmmmmmmmmm.......
It's still a little choppy.

So...........

I toggled Vsync.
I toggled gfx_asyncrender_old 0

I went like this:
gfx_high_detail 0
gfx_texture_quality 0

My next step is start with a clean config, rather than using the old ~/.teeworlds/

The game runs OKish, it's just when I go fast it gets noticeably choppy :/

Will report back ...