Constant loading hangs and FPS drops on decent hardware

Post patch there have been three common issues. One is DirectX and the others Overlays and the usual UI problems.

DirectX 11 is a new multithreaded version. The pre-patch (with minor changes) DirectX 11 is now called DirectX 11 Legacy

Pre-patch we were seeing issues with DirectX 12 on some systems. Those issues still exist. Basically the bottom line of all this is test either DirectX 11 or DirectX 11 Legacy.

Overlays - Wow does not support overlays. We often see issues caused by overlays on the forum here. The patch seems to have broke overlays. To name a few: Discord, Overwolf, EVGA PrecisionX, MSI Afterburner/RivaTuner, Nvidia Share, Microsoft Game Bar, Twitch ……

A good number of issues have been the UI. It is simple to test - run the standard UI reset. Test the game with no addons. If it doesn’t help simply remove the OLD you added to your original addon folders. Delete the new ones the game installed. Back to normal.