Integrated authoring and performing of mixed music scores, where musicians interact dynamically with computer controlled electronics, is enabled by the Antescofo state-of-the-art software package. Composers are able to plan computerised actions through a dedicated programming language, and performances are then synchronised in real time. AscoGraph is the dedicated graphical interface that allows users to configure Antescofo behaviours and vi-sualise their layout over a mixed music score. This paper presents developments in the direction of increased clarity and coherence of AscoGraph's visualisation of com-puterised action scores. Algorithms for efficient automatic stacking of time-overlapping action blocks are presented, as well as a simplified model for displaying atomic actions. The paper presents the improvements in score readability achieved, as well as the challenges faced towards a complete representation of dynamic mixed scores in the Asco-Graph visual environment.