Fix jitter when changing actor speed
If you change the character speed using SetActorProperty or any other way, the prediction will desync for a while, thus causing a short jitter. This patch adds speed to prediction calculation, but mods also have to call SetActorProperty on both client and server side for this to work.
Attached below is the patch and a mod to test it. The mod changes actor speed when crouching.
Thanks for the report and the patch! The patch looks fine and I added it.