At the moment I am using a Wacom Intuos Pro, however the problem I'm experiencing happened for my Huion H610PRO as well. The issue does not occur when I am drawing with my mouse. Essentially, if I draw a small curve or angle, Photoshop automatically connects the two ends. Hopefully this image will help to explain it; 1 represents what Photoshop creates, while 2 represents what I create. All I drew is what's represented by red, yet Photoshop creates the full shape. I'm sure I've done an awful job explaining this, so if you have any clarifying questions, please ask.
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Problems like this have been discussed many times. There is no one solution for there are OS versions both Windows and Mac. Different devices and device driver versions and different API on Platforms and Photoshop versions. All must work together.
There are OS settings, Device profiles, and Photoshop settings and configuration files. All must work together. Please do some searching here.
Also in the future Supply pertinent information for quicker answers
For example Windows 10 CC 2017.1 Wacom Intuos Pro device diver screen capture.