New to Cubase Elements 11 and Groove agent problem

Please bear with me as I am new to this.

I want to try and do something basic with Cubase and GA SE. I have downloaded a midi of a song I want to put my own instrument recording on, I’m not having a problem with that.

When I play the drumbeat on MS GM Wavetable synth the drumbeats are perfect but when I change to GA SE the drums are early.

I used midi import to get the tracks into it and I cannot figure out where I am going wrong. No doubt I am missing something obvious.

Thanks for any help you can give.