Early Fokker Campaigns became harder with the N10CI and before that the wind and an improvement in rear gunner AI. At least that is how it went for me.

I might go Jasta 15 later in the fall and fly a EI....IDK....longest I've lasted with them in an EI is 12 missions in a non-DiD campaign. They don't upgrade to an EIII until spring, think they skip the EII altogether.