Technically impressive and amazing vibes! Love the visual style and the audio design really supports it. The floaty movement and drifty controls match the ambient style pretty well too.
In terms of feedback the main thing I'd say is the combination of delayed/out-of-sync controls and the abstract visuals can lead to the game feeling a bit confusing and frustrating for the player. While I don't think super sharp and snappy controls are needed for a game like this I might reign them in a little - for instance maybe the dash could be directly controlled by the cursor instead of the direction of the player's triangle.
Overall super fun game, visually stunning and very unique - great job!