Finally able to login (I'm in the north sea in bad weather)...
Made a new trip with IC 2436, and managed to get my shots. I found vegetation bugs at Km 26,4 (after Delmenhorst, trees blocking the line), at Km 23,2 (trees hovering in air at the left side), and the same grass crossing the rail at Oldenburg Hbf (as others have found). The bugs at Km 26,4 and Km 23,2 I removed myself in the previous version. I have scenery density, etc at max. I let the pictures speak.