I’m sure that there is some impact, but it still seems smooth on my system (i7 9800X, 32 Gb RAM, RTX 2080Ti). The only negative is that it does funky things in VR. So, if I am going to fly in VR I use Active Sky and Ultra-Weather which work and look great together. X-Enviro looks great on a monitor though and seems to be on the right track again…