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Topic: PID controller, which one?

I hope it belongs here:

I have problems with uneven extrusion and i am suspecting my REX 100 controllers. Even after pidtuning
i have no idea if it swings up and down, as it does only show whole degrees, and no decimals.
So it could swing between 190.1 to 190.9 and still show 190.

So anybody have any input on Mypin TA4 or Inkbird ITC-100RH ? (both seems to show decimals and have more options).