No, it could be because you didn't disable cameras. If you don't have a camera, it can cause a lot of frame drops. Are you sure you enabled valk mode? You have to change it in the prop/ea3-config and change it like this 
 
<soft>
        <model __type="str">KFC</model> <!--Don't change this at all, it's fine the way it is-->
        <dest __type="str">A</dest> <!--Changes language. A = English, K = Korean, J = Japanese-->
        <spec __type="str">H</spec> <!--Determines if it's in valkyrie mode. F = not valkyrie mode, G or H = Valkyrie mode-->
        <rev __type="str">A</rev> <!--This is fine, don't change it-->
        <ext __type="str">2021083100</ext> <!--Version number. Doesn't need to be changed for gameplay effect, just to say the sdvx version-->
    </soft>