5.3 endless crashes when editing control rig/ik rig.

Hi,
When using the control rig or IK rig I’m seeing a ton of crashes. I can work for 4-5 min then will get the following.

IsRotationNormalized() [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Math\TransformVectorized.h] [Line: 1300]

NOTE:
I am NOT running the game. This is when trying to edit the control or IK rig. Not sure what to do here.