Dears,
First, congrats on the Windy, it's a fantastic product, and I love using it.
Just a bit of background: I'm a Computer Graphics researcher specializing in high-performance scientific visualization, so I'm close to the topic.
I have the feeling that the animations of the particles, especially the decay time, are based on the framerate instead of a real-world timer. This means that when you are using a high-framerate-capable device (e.g., my laptop, with a 3080 and 240fps screen), the particles are almost invisible.
Of course, I have no idea of your implementation, but it should not be difficult to fix, and it would guarantee a similar visualization across devices with different capabilities.
Just a suggestion!
Best wishes, and keep going with your amazing work!
Alberto Jaspe
(albertojaspe.net)

Thanks @Korina, I've done it. However, I think that is a workaround, and that the problem will be still there (for instance, changing the window between different frequency monitors).

Hi. I've just tried windy in a 300Hz monitor, and the wind particle trails (and so, the own particles) are almost invisible. I tried lowering the monitor's framerate to 60Hz, and that solved the problem, particles and their trails were Ok.

So I guess the lifetime of a particle is depending of a number of frames, rather than a timer, creating very different visualization experience depending on the display device.