When debugging in device with ART enabled, android app is slow -

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i dont know why week ago when debugging app in android studio, app in device slow, if generate apk or use play (not debug) option works fine..

anyone have idea why? think didnt change in sdk or in app this..

when art enabled, device cannot ensure compiled code matches bytecode instructions. therefore cannot step through instructions , therefore lines.

this forces device fallback slow interpreter, possibly doesn't jit-compile.

for faster debugging, switch dalvik.


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