Very different. By Germans in German forums I get told that I sound educated and intelligent, very put together and even interesting. No idea where they got this from, but I get told this a lot.
With lots of effort, I can do that in real life as well. Not a whole day long, but several hours if I feel really good and healthy.
The reality is that at home when I let all my concentration go, calm down and enjoy the peace I sound horrible. I fail at speaking out loud the words I search for, screw pronunciation, my sentences structure isn't at all structured and I realise what an effort speaking actually is. My mom can testify that I'm speaking the truth... barely anybody wants to believe how intense the change actually is. I'm always trying hard not to let any language issues shine through, but I'm bound to fail and I realised that a few weeks ago.
I'll have to figure something out.