I added custom css to adjust the menu breakpoint.
Now the mobile menu does not respond when clicked, if screen size is over 980px.
/* hamburger menu
@media (max-width: 1180px) {
a.x-btn-navbar {
display: inline-block;
float: right;
}
.x-nav-wrap.mobile.collapse.in {
display: block;
}
.x-nav-wrap.desktop {
display: none;
}
}