PETG - stringing

Hi all,
again here with some troubles. Trying printing PETG with 0.8 nozzle (0,4layer), nozzle,bed - 220/80, retraction and moving speed as fast as I can, around 100/300mm.
I tried a lot settings but seems nothing work to remove stringing. Retraction distance seems does not help. What only affect stringing
was reduce temperature, I could go to 190, but print result was not ok then.

so my question is, is it even possible to remove stringing with printing PETG ?

I add photos, collumns are 6mm width.

Thanks

From my limited PETG experience (only on a standard 0.4 nozzle)

Its very much related to the quality of the filament

Orange PETG from Prusa, prints very nicely, only a small amount of stringing.
Black PETG from who knows where in china... strings like a {expletive} no matter the settings.

There is a temp range, where PETG is pretty cheesy. Printing at lower temps let the string rip apart. Printing at higher temps builds a small blob.
I'd try 230-235°C for a change.