i'm having a strange issue with the sprites.
they are flickering (varying -1 scanline in a few frames) if i use the actual ppu scanline as reference for evaluating their Y position.
however, i could find a hack that's may be incorrect - an additional ppu _drawline_ that's zero on frame start and increase if playfield or objects are enabled. Seems to work nice btw.
any help would be welcome :)

NOTE: thanks for the sprite dma help, so it's fixed and working good :) no error in NEStress.