Offizieller Kommentar
If your quantize is set to 1/8, there are 7 spots between the grid markers to which your cues can "snap." If you'd prefer them to be ON the grid, set it to 1/1 instead.
Any drift / sync issues you have would be unrelated to quantize - ensure that your tracks are properly beat-gridded through the duration of the track (and that you have used NORMAL analysis for a track with electronic percussion, and DYNAMIC analysis for any track with a live drummer where there may be minute variation in the accuracy of the timing between beats).