Sage takes a long time to update PHP changes

Hello everyone!

I’m kind of new to this sage-gulp thingy and this is a problem I had previously on a Sage project, but somehow magically just fixed itself, which is not happening now.

Anytime I make changes (in this case to a function in assets/extras.php for an add_filter function), only in PHP, sage (or wordpress or I don’t exactly know who) takes several seconds to update these changes. Gulp watch reloads the browser, I reload several times the file, but not until, sometimes 5, sometimes 10 seconds have gone by, the changes take place.

I don’t know if this is something I’m not doing right, which is probably the case, but I just would love to know where the error is to fix it from now on.

Thank you so much in advance for your knowledge and patience.