AC not cooling below engine temp 70c

[tamos]

Hey,
maybe someone can help me out, our earth is getting warmer and warmer every year and im sweating my ass off.
the AC starts to cool(seems like the compressor is not being engaged) below engine temp 70c.
as soon as the temp reach 70c its start cooling.
what could be the issue?

 

[mjstokes85]

Could be refrigerant levels, when it's hotter and expands more it works? Ever get to the bottom of it?My AC is never great even after a regas.