Thanks for this. It's pleasing to hear there might be a better way! I shot myself in the foot a bit when I saw the web worker thing working (ish!) and carried

Thanks for this. It's pleasing to hear there might be a better way! I shot myself in the foot a bit when I saw the web worker thing working (ish!) and carried on down that path, so didn't really explore the other means with requestAnimationFrame etc Will be definitely looking at it now though, it's good to know that everything can run on the browser thread!