Gas gauge needle is tweakin'

[traveno]

Hey everyone, first post!

My car's gas gauge likes to twitch for a few seconds on start up, then functions normally. Sometimes it gives me a wild reading like past the full mark when I know the tank is low on gas. This is the only needle with this problem.

I've thought maybe it would be the tank level sensor, but I don't know why it would make the needle twitch like that. Any ideas?

Here's a video of the symptom...
https://drive.google.com/file/d/1Bnfy8YW41s2u9z6R1jaebWlW1-oQkAPY/view?usp=sharing