I am converting a project from V3 to V4.
1. Servos not positioning in same position. If servo centered before it in certain position it is way off now.
2. Servos not releasing. Same script in V3 no issues.
3. Servos jumpy. Not as smooth as V3
Wireless router right next to project.
No change in script just moving jumper to jumper same pin configuration.
BTW - similar problems with other small project with similar problems.
Try different V4 modules same results.