One week is not a "long test"... That is not enought to test...
And AnTuTu score is so useless. He can be influenced by many factors. Try run the test after some days on (this if the overclock doesn't random reboot the phone first)... :P
Well, G300 is not for gaming and even wort in overclocking... Thats the true...
G300 is not the same as a Galaxy S5 :P
Is good, but not so good. its a old, outdated phone... :)
Overclock anything, in any device (even computers) can be risky if done incorrectly. Try push the voltage or clock to high in a smartphone (and, again, the same in a computer) and you may end up damaging the chip...
Overclocking in a smartphone is risky and unnecessary most of the times. Is not 200-300MHz that will give any noticible "boost". Yes, i can appears a little faster and AnTuTu score can improve, but in a daily usage is worthless...
In the G300, overclock:
1- Will generate more heat. And more heat = reduced lifetime of the smartphone (even more in a "entry" smartphone like G300)...
2- More heat will reduce also the battery capacity in a long time range
3- More heat will deform the screen (i have a little "white smoke" - barely notice, more noticible in dark background, but its there- in my screen because of this)
4- When charging and using the smarthphone, the heat will go "DANGERLY HIGH"!
So, for the G300, i don't recommend do overclocking, at least to high "Mhz".
Ok, so after the publish of the first message, some users appear to report problems with the SD card not being corrected mounted in the Android.
In some SD cards, after create two partitions, the first partition (used for the storage) appears cannot be mounted. Always appears a error about the SD Card being empty of the filesystem damaged. The second partition, used in Link2SD, works fine. Is just the first one.
There is a way to bypass this problem using the NTFS filesystem. So, first of all, you need a SD card reader in your PC. After that, is just needed to format the first partition (and ONLY the first) to NTFS.
Android doesn't handle very well NTFS, so is needed a new app to make it support: Paragon exFAT, NTFS & HFS+ (check the Google Play) After install the app, just run it. He should mount the new NTFS partition and should now be usuable under the Android system.