Connections during speed change

[talentplace]

Hi,
The best way to proceed is to send me a reproduction case so I can diagnosis exactly what's going on. But if this is impossible/too time consuming, can you please tell me:
1- what is the minimal speed of the arrows
2- what is the longest segment's length of your splines
3- what is the value of your Position Mode and Move Mode fields

I've solved the problem. 
I created a short new spline on the place of the old one near the arrow. I connected the old one and the new one and then make an arrow on the new spline connected with another. The problem dissapeared. 
Thank you for your answer. Curvy is the best plugin i worked with! Good job!