Canon R7 and Sigma 150mm f2.8 EX DG OS HSM Macro Lens autofocus problem

[davholla]

According to this

Sigma updates lens compatibility notice for Canon EOS R after further testing

After further testing, Sigma has updated its lens compatibility notice to highlight what lenses work with Canon's EOS R full-frame mirrorless camera.

www.dpreview.com

They should work but I find the autofocus very poor -any ideas? It is not the lens I think as I have tested it with another camera.
I have firmware 1.5.0 should I upgrade to 1.6?
The camera seems to work with birds ok I just tested with the Canon 60mm and it was fine

 

[evelakes]

Do you have enough light to focus if lower the shutterspeed or increase iso does it grab focus better?

 

[davholla]

Do you have enough light to focus if lower the shutterspeed or increase iso does it grab focus better?

I did but I gave up and returned the lens

 

[LCPete]

Not exactly the same setup as you but I use the Sigma 150 non OS quite successfully with my R5 although focus isn’t as fast as a more modern lens it does work ok including image stacking
Does sound like your lens was faulty though and you have returned it anyway