Servo 0 Stuck at 90 when set to 180

uArm Serial No.: UP13011901000F
Firmware Version: 3.2.0
Operation System: Mac 10.12.6
uArm Controlling Method: uArm Python SDK 2.0.3

When I set the servo_id=0 to rotate from 0 to 180 degrees at speed 100000 it goes fast from 0 to 90 degrees then suddenly very slow and jerky from 90 to 180 degrees. This does not happen for 177 degrees or less. It happens movements from 0 to 180 and 180 to 0.

Why is that movement not smooth for the whole rotation?


swift.set_servo_angle(servo_id=0, angle=0, wait=True, speed=100000)
swift.set_servo_angle(servo_id=0, angle=180, wait=True, speed=100000)