Project Wingman newcomer Anon here

I'm have performance issues, even at 90hz (I have RTX 3080 12GB, 11th gen I9-11900 processor). Does anyone know any tips and tricks to make it still look good and have a stable 85fps+

I had found a stable way until Mission 5, where the city and amount if units brought fps down by 30-40. I'm already using VR performance kit

What else can I do without making the game look very ugly (no shadows, bad clouds etc), most of my settings are medium/high