missing track file Image auto tracker losing track

[Moxica]

Sometimes I can only get to out of three (moving) targets, and loose track of the third one.
Other times, I can only lock one or two, as the TADS movement is restricted after first target is "locked"
What are the conditions of a successful track of three targets?
I havent been able to find any list of limitations or conditions.
Spacing? Speed? Distance?

Edited January 6, 2023 by Moxica

[Moxica]

Writing is helpful in itself. Since I wrote I've come to some possible conclusion.
Yaw or bal limit for example?