Best approach for implementing one-touch platforming mechanics in HTML5?

[kaileyketchum]

I'm working on a small HTML5 game prototype that uses simple one-touch controls and fast obstacle timing.

For reference, the gameplay feel I'm aiming for is similar to titles that rely on rhythm-based jumping and precise timing, such as geo dash ios.

My current stack is Phaser 3, and I'm trying to determine the best way to handle:

• Consistent jump timing across devices
• Obstacle spawning synchronization
• Maintaining smooth performance on mobile browsers
• Audio and gameplay synchronization

At the moment, the prototype works well on desktop, but mobile devices occasionally show slight timing differences that affect gameplay accuracy.

For developers who have built timing-sensitive HTML5 games:

1. Do you rely entirely on delta time calculations or a fixed timestep approach?
2. What's your preferred method for keeping gameplay events synchronized with music?
3. Are there any Phaser-specific optimization techniques that helped reduce input latency on mobile?
4. How do you test timing consistency across iOS and Android devices?

I'd appreciate any advice or examples from developers who have tackled similar gameplay mechanics.