Wow.. I was wondering why it got so slow after switching to 5G

I asked an AI, and after switching back to LTE priority mode, it's incredibly fast ㅡㅡ
I heard that in areas with weak 5G signals, it can actually get slower while switching between LTE and 5G, so I changed it,
but now it's fast again, just like before I switched to 5G ㅋㅋㅋㅋㅋㅋ