[HELP] Rig biped simple glitch

[|LF| Łamistalagnat]

When using simple rig and rotating elbow of the model I found an issue. Let's say you make keyframe 1 of that elbow and then different keyframe 2 which all of this should be a normal animation but for some reason right before keyframe 2 the elbow rapidly changes it's location, location of the elbow is okay but that rapid speed is just unnatural and unnecessary
I would appreciate any help

[|LF| Łamistalagnat]

Update: I deleted every possible keyframe which could affect elbow rig but the animation is still there

[|LF| Łamistalagnat]

Ah, I see. It was because hand rig was badly placed

[SИΛΚΕ 🐍]

Select any desired keyframe and hit number 3. It will help to get a bit smoother animation.