Hi theolm98
I know this topic is from nearly 12 months ago but I’m seeing this issue on my pc with a 14900k paired with a 4090. Did you manage to find any solution for the issue?
I have tried hell of a lot but can’t seem to find what is causing the issue. I am getting these spikes a lot at cruise altitude rather than on the ground. It’s kind of spoiling the gameplay because just like yourself, other than the spikes the performance is buttery smooth! Such a strange one. I get my spikes at consistent intervals every second or so. The FPS graph looks very similar to yours.
Any help or pointers in the right direction would be incredibly appreciated.