The game is pulling assets from your storage too slowly. Fix:
Hardware-accelerated GPU scheduling (HAGS) can sometimes cause micro-stutters in Unreal Engine 4 games. Spiderman- Miles Morales FPS Boost and Lag Fix ...
Turn OFF to reduce input lag, or use G-Sync/FreeSync if your monitor supports it. 2. Windows Optimization for Gaming The game is pulling assets from your storage too slowly