Cheat Engine

[penock]

I use CE server for Android x86 to modify the memory on emulator.
I tried to modify opcodes in Protect:no access however, it fails to change opcodes or cheat engine froze.

Below lists are what I tried

VEH debugger (Succeeded to modify opcodes once, but never after that)
kernel debugger (Cheat engine froze after tried to change opcodes)
Make page writable (Not work on windows debugger, caused freeze on kernel debugger)
Execute fullaccess in Auto Assemble

Is there any way to change the opcodes on emulator?
Thank you.