Same day dp`s were installed i did notice same thing.
In my case this is happening only when on idle more than 2min.
When dp`s were changed i also changed oil this time with 5w40 Castol Syntec.
Now after 300kms i went back on original BMW formula(Dealer 5w30).
Much much better!!!!!! also i have only used 6 full bottles 950ml per bottle and my oil level was at the maximum.
Before that i had 6.5lt of 5w40 and oil reading was the same.
Bottom line is now when i have 5.7lt and original oil smoke is gone!!!
It can be too much oil in the system or wrong oil...
In my case this was the problem i wish same works for you guys... Good luck !!!!!!!!