Dico: There is no different SED in 8.30 and 8.40.
3run: The PH_CAPSULE size is identical in 8.30 and 8.40 - it was changed prior to 8.30. Thus, the jumping problem is apparently related to the frame rate. The frame rate is different between versions and also different on different PCs, so you must make your jumping script working independent of the frame rate. I think there are several examples of jumping scripts in the manual and also on the forum.