I am not from Laminar Research; just a flight simmer from down under.
You are in the wrong forum. Read the information regarding your version at the following link found at https://questions.x-plane.com/26025/intermittent-frame-rate-drop
You need to go to a steam forum to seek an answer.
Welcome to X-Plane Q&A, where you can ask support questions and get answers from members of the community.
This site is for X-Plane support questions only. Please search for existing answers before posting your question. Off-topic questions will be locked.
If you’re new, you’ll need to register before asking your first question.
If your question is answered, click on the check mark to select the best response.