FearLess Cheat Engine

Hello, I'm reverse engineering a ps1 game emulated through RetroArch, I'm using a core called "Beetle PSX HW". When I click on "Find out what addresses this instruction access" I get too many addresses and the game freezes until I stop the operation, I tried using VEH debugger, Windows debugger and kernelmode debugger, nothing changes except that kernelmode debugger crashes RetroArch when I try that operation.
Any hopes to do that operation without freezing the game?
If I try to inject code the game freezes either way. (I'm talking about emulator code, I found some game code but that's just luck)