Speedramp issue - footage looks different when re-importing into premiere pro

Hello!

I am an After Effects newbie and I have the following issue:

I am editing a big project in premiere pro and I want to apply some speed ramps to a couple of the clips. Therefore I checked a tutorial and followed all the steps: I imported the clips into AE and created a composition with time remapping to do the speed ramp.

It all works out really well, the slo-mo looks nice, the sound is great. But when I export the clips and re-import them into Premiere, the footage looks notably different, somehow it plays back differently, like the frame rate or the frame processing is now different

I have tried a few things:

- I changed the color engine to REC

- turned off motion blur and frame interpolation

- double checked the framerate 

The footage is: 15.3 Mb/s 1920*1080 at 25 fps, AVC

Export is set for: H264, best quality 1920*1080 at 25fps, frame interpolation off, half-frame rendering off, motion-blur off.

I have spent a couple of hours trying to find a solution, but couldn't. Does anyone have an idea what it is that I am doing wrong in this process? Please help!

Thanks so much for your time and greetings!