Try to add the next code in Theme Options > Theme Custom CSS:
.et-preloader-hide > .et-loader {
display: none;
visibility: hidden;
}
.elementor-element:not(.elementor-motion-effects-element-type-background), .elementor-element>.elementor-motion-effects-container>.elementor-motion-effects-layer {
-webkit-transform: translateZ(0);
will-change: transform;
}
Clear cache and check then, let us know the result.
Regards