In fact, the AnandTech technology page recently said that the default encryption mode may be the cause of the reduced performance of Nexus 6 and Nexus 9 models. To testify to its assertion, AnandTech conducted tests on an unencrypted Nexus 6 (coming from Motorola). The result is sad, this default mode is hindering reading performance of encrypted Nexus 6 devices by up to 63% (compared to non-encrypted devices ) , while write speeds are reduced to only 50%. .
Not only that, the worst thing for those customers is that, if they buy a new device that has Android 5.0 Lollipop pre-installed, this encryption mode will automatically be enabled by default and not available. How to turn them off. Fortunately, old Android devices that have just downloaded an update to Android Lollipop 5.0 can still go back to older Android versions to maintain the machine's inherent performance.
Currently the Android development community is making every effort to find a solution to remove this annoying coding mode. But, the main "key" to all problems is still mostly on Google. Hopefully, the company will soon release a patch to overcome the situation.