My furious fpv tinywhoop won't arm unless it's sitting still for a second or two. Once you get it past that first arm though, u can arm it no matter what it's doing after that.. seems weird. Like it's a check only upon first arm after plugging in the battery. Is there a way to disable that?

That's probably the firmware waiting for the gyro to calibrate (has to be still for a few moments). If you had a buzzer, it would beep three times to indicate that gyro calibration is complete and ready for arming. With no buzzer, you can only tell by watching the leds on the FC. This only happens when you apply power (plug in the battery).

Ahh gotcha. Guess that's just how it is haha. Not too big a deal just was curious. Thanks though!

In CLI type

Set small_angle = 180
save

Yeah I tried that and also 0, but no difference.

Even if you change the setting of "small_angle", the quad still needs to be still for a couple of seconds after powering up to calibrate the gyro. You can't turn that off.