Default [Q] Xiaomi Hongmi clone ROM

Hi there,
i got one xiaomi hongmi clone phone and it look like there is something wrong. I know that inside this phone is modified ROM and this phone has different parts, but is there some possible way how to flash this phone with other ROM?

The actual version is only in english and chinese and have one ot two big problems. Phone is performing "soft" restart during working on it (quick reboot back to home screen without PIN) and the second problem is that some applications can not be runned, for example google chrome always crash, some games after few seconds of playing crash etc.

Phone has root access and has CWM recovery partition.

So is there some way to fix this problems? Or should i throw it from window?