I have been making the level look better by using meshes of rocks to hide parts of the textures from the landscape that have been stretched out, and I have also been adding foliage to fill up the level, but I have come to the issue of performance. All of these new meshes and foliage have lowered the frame rate. To fix my issues I had to check every mesh, I had to check if they were using nanite, and also lower the amount of nanite triangle they were all using, in the end, I managed to increase the frame rate while still keeping the level looks and implementation it had.