Hello you all. I don’t know if this is helpfull but it worked for me. I noticed somewhere on the forum a note from someone saying that the issue was resolved after uninstalling the Embraer Worldwide E-Jets AI from Adventum simulations. I actually did buy and install this mod. But I have the impression that it doesn’t work well together with FSLTL. So I did two things: 1) I removed the E-Jets AI (FSLTL now also has E-Jets) and 2) I deleted the rolling cache. It worked for me. No more stutters, a normal flight, the first one without stutters in recent weeks and I used a PMDG 737-800. A high fidelity plane that needs quite some resources. I also, for the fun of testing, placed the AI sliders to the max just to check if the issue was really resolved and yes, it works fine.