rigged character behaving strangely when animated (video attached)

[tulip quarry]

To me it looks like the last keyframe is rotated 360°, which would explain why the frame where you set the key looks correct but the interpolation does not

[thin sonnet]

i already tested to see if that was true and it happens regardless of the rotation

i positioned the rig using inverse kinematics, not rotation keyframes

[tulip quarry]

could you do another recording wher you show the bone rotation and change the timeline to the graph editor

[thin sonnet]

yeah

its uploading, might take a few minutes

[tulip quarry]

I feel you, suffered for 12 years with slow internet

[neat ravine]

could you show a screenshot of the graph editor?

[tulip quarry]

Okay really dump suggestion but have you tried to delete the keyframe and make a new one. I cant really tell whats happening but maybe you accidentally messed some specific setting up.
Otherwise you could also share the .blend file and I could try my best to find the problem but Im not that good with rigging

[thin sonnet]

yeah i've done that a few times

[neat ravine]

hmm, interesting.
Is it the actual armature that's following the curve, or is it the root bone?

[thin sonnet]

the root bone

sorry for replying slowly, i was busy for a little bit

[neat ravine]

are you trying to animate the root bone?

[thin sonnet]

im trying to animate the armature

im not sure how else i would move it

[neat ravine]

this video shows you trying to animate a bone, is that the root bone? What are you trying to animate?
Also, what does your root bone object constraint stack look like?

[thin sonnet]

there's no object constraint, im using auto ik

i'm trying to animate the entire rig to follow the curve

the bone i rotated is the root bone

would it be better for me to move the entire rig in object mode and then go in and pose it?

[neat ravine]

this bone constraint on the root bone should move the armature to follow the curve

[thin sonnet]

doing this makes it extremely hard to position the rig during the animation

i tried using methods online to make the armature follow the curve but they only really worked for one specific direction

and im trying to have it loop around in a circle

and even with the bone constraint enabled whenever i tweak the rig slightly it still makes it spin around

[thin sonnet]

figured it out, i just followed a video and managed to get the result i wanted