RigidBody Stuttering when Time.scale is modified for Slow Motion

Hi everybody and thanks for all the work!
I have recently updated from Debian 10 (Blender 2.83) to a Windows system (Blender 2.93). Without any change in the code, rigid bodies stutter when changing time scale to achieve slow motion. I suspect it is a Bullet Engine issue, seems like it stopped interpolating rigid body transforms and, as rendering and physics are out of sync, stutter shows.

**To Reproduce**
Give Time.scale a lower value, for instance.
```iron.system.Time.scale *= 0.5;```

**System**
Ryzen 5900HS, GTX 1650 Mobile
Blender 2.93.5
ArmorySDK2110

Start by reproducing the issue with Blender 2.93.5, ArmorySDK2110, and `iron.system.Time.scale *= 0.5`, then inspect the Bullet rigid-body update and rendering synchronization paths. Done means rigid bodies remain visually smooth when time scale is reduced.

Written by the indexing model from the issue text.