Is it possible to make the limbs move with the physics but only the limbs? Like It's super hard to get the right position without loving the whole body up. Also having the last keyframe of the animation should automatically set to the previous keyframe every time you make a new one. It's weird seeing your animation go then everything drifts to the middle when you're just previewing it lol.
Hold ctrl and left click a joint to lock/unlock it. Note that this doesn't work 100% properly, but for these purposes it does
If you're moving the arms then lock the neck joint
If you're moving the legs then lock the hip.
If any of the parent's children joints are dragged, then IK won't pass through the locked parent, however if you drag a joint and one of it's children are locked, then it functions as if it wasn't locked at all, so.
This is probably the most major bug in T0. (Besides you know, crashing.)
Haven't found anybody good enough at math to fix this
Also, regarding the gif exporting - I'm pming you with a link to an updated version, I'm not entirely sure what bugs there are in this (but there shouldn't be anything noticeable compared to the current version).
If exporting works then I'll push the update to the auto updater