video settings graphics option on Fast and Fancy are fine but when I set it to Fabulous the ai_tracker visuals can only be seen briefly when in just the right position.

The problem isn't specifically with ai_tracker, but with the general Shapes API. It used to work in previous versions (1.16.1, with fabulous graphics on).

• When running fabulous, you aren't able to see Carpet shapes (with the mod in the client-side)
• In lower graphical settings, Carpet shapes are rendered normally (with the mod in the client-side)

Without the server seeing Carpet in the client:

• Shape particles are generated once per shape, and therefore the duration argument is ignored (doesn't affect built-in apps, since they send new shapes regularly, but may affect custom apps), but the particles are rendered correctly in fabulous

lol 420