I have the same issue with the same mic. This is what I did and it help 100%.
First I thought it was cable problem but it wasn't.
Second I thought it was my soundcard but it was not.
Third I thought it was my DAW but it was not.
Fourth I doubt it could be my mic, I took another mic and record ,Boom it was good no issue of huming or buzzing.
Now I realised that it was my mic.,
After enought frustration I decide to fix my mic by opening the diaphragm and unscrewed every thing.
I'm not mechanic or electrician.
But I tried as it was my last option.
I opened the diaphragm but it look fine.
I open the base and it looked fine.
When I open the XLR pins I noticed the Nut that hold the Pin together with the Stem was a little loose, just litlle,
I opened the nut and refixed it.
With no expectation to be fine I tested record and Wowwwwwe
All the issue were gone.
Thanks to me for the adventure I had.
Please do the same.
Don't blame your earthing,cable,DAW,Soundcard blah blah.....
It's the loosed connection
Best of luck.
