rtmax.dll is a process belonging to the 3ds max program . "rtmax.dll is a RTMax" "belonging to 3ds max" "from Autodesk, Inc."
Check that rtmax.dll is stable on your computer.

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Determining whether rtmax.dll is a virus or a legitimate Windows DLL depends on the directory location it executes or runs from. Click to Scan your PC including rtmax.dll to Detect any Security Threat.