Physxloader.dll errors are caused by deletion or corruption of the physxloader DLL file. This file is associated with NVIDIA's PhysX physics engine.
How to Fix PhysxLoader.dll is Missing | Simple & Official Solution
Follow these steps in the order they are listed below to try the simpler solutions first.
Download the PhysX System Software from NVIDIA and install it on your PC to replace the missing or corrupted physxloader.dll file. This is the original source of this file, so it is completely safe. Just make sure to restart your computer after installation.
Another option, instead of installing it, is to extract the files. After you download the program from that link, use a program like 7-Zip to extract all the files. You will find physxloader.dll in this folder, after which you can copy it to the place where the error says it is missing: