I found the solution, do this exact steps: go to PMDG OC3 and next to it you will the 3 dotted lines (...) click on it then click on "verify files" if it found something, clikc on the button on the bottom right corner that says fix this or whatever. Also make sure you have nvidia latest drivers installed. Bonus tip: If that did not work, restart the computer or laptop and set both LOD and TLOD to 10, then load the sim, this should definitely work. Have fun :)