I never doubted that they run fine on your system. But just ask the people behind the fan translation, currently editing it. They wouldn't also work on a patch to fix the shader bug causing the load times if it were not a thing. The reason why you don't have that problem may be because your hardware is just so much better?
Tbh ive never had a "Shader" bug...I did use to get really bad flickering and screen problems with a non updated version of the game. Have you updated your game? Have you reinstalled the game?
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Literally the best patch for PC...if you boys are coming here looking to patch your pc version of Zero no Kiseki just use this....game runs a million times better with it too.