Hello, like I said, the problem is that animated letters works better with small text (titles) and not paragraphs. If you want to have better control over it, my suggestion is that you have a version that appear on desktop only and other for mobile, example:
<div class="d-none d-lg-block">
<h2 class="text-5 mb-0" data-plugin-animated-letters data-plugin-options="{'animationName': 'fadeInUpShorter', 'animationSpeed': 20, 'startDelay': 0, 'minWindowWidth': 0}">
Text that will appear only on desktop here, with effect.
</h2>
</div>
<div class="d-block d-lg-none">
Text that will appear only on mobile here, without effect.
</div>
However, it’s not a good practice, so, only fadeIn would work better:
<div class="appear-animation" data-appear-animation="fadeIn" data-appear-animation-delay="0" data-appear-animation-duration="1s">
Text with only fadeIn here...
</div>