So I turned off Miui Optimization because I wanted the always on display to always been on (apparently if you disabled Miui Optimization, it wouldn't turn off after 10 seconds). It worked, but I lost some things like the haptic vibration or the Gaussian blur of the interface. I need help, I enabled Miui Optimization again but it didn't fix it (I restarted my cellphone more than 5 times). I don't know what to do and I'm not able to find a solution.