What is the users' dynamic resolution setting? A low framerate target setting will force low framerate and will still show high usage since the game will upscale all of its textures as high as possible in order to obtain the target framerate, buffer them in very high resolution, and then down-sample the output to match the monitor's resolution.
Users can purposely make their games appear to perform at low framerates with very high system loads if they choose settings which incorrectly match their systems' abilities. Basically, the game will always try to use all of their systems' resources and the lower they set the framerate targets, the more it will appear that something is wrong because the game will try to keep the load high even at low framerates. The benefit to this, of course, is that the appearance is improved.
https://forums.ubi.com/showthread.php/1759689
If there is indeed a problem, the most likely culprit and solution is that they will need to fix bugs and/or tune their dynamic resolution engine and/or game in general. This DRM stuff is completely unfounded. Can anyone provide PROOF of the DRM conspiracy!?!? Nope.