What's wrong with last playable beta (2.0 Beta 2, 23 March 2026)? Runs perfectly fine at 50Hz (ok, enemies run at 25Hz), and added cool multidirectional nice-looking smooth parallax.
Some graphics had to be reduced from 16-colours to 8-colours. The vast majority of parallax scrolling on AGA had to run at half speed because it could not be redrawn in a single frame