Put ?fastclick=1 at the end of a Seterra URL to make clicking faster.
For example, https://online.seterra.com/en/vgp/3003 turns into https://online.seterra.com/en/vgp/3003?fastclick=1
Normally the game registers a click when the mouse is released. But with the ?fastclick=1 URL extension, the game registers a click when the mouse is pressed, therefore saving some time in every click. And it is allowed in speedruns!
There are more URL extensions at https://online.seterra.com/en/p/tips-and-tricks All of them are allowed in speedruns, except for shownext (there is a separate category for that).
If you want to use multiple extensions, use ? for the first, and & for each additional extension. For example, https://online.seterra.com/en/vgp/3003?noflags=1&fastclick=1&nocursor=1