Issue with standalone DisplayID

- Window 10
- RTX3070
- DP 1.4

Hi
I'm working as an engineer in display field.
Our device is kinda aging device for panel, it has dp input and Vby1 output.

So if I set edid and connect with PC, PC recognize it as a monitor.

It works well with EDID but higher resolutions(5k, dqhd etc) are coming out so EDID doesn't work anymore.

I've already used DisplayID Extension block but I guess it cannot cover all kind of GPU(espacially AMD and Intel).
Some of my clients' GPU doesn't work with DisplayID extension block.

So I'm trying to apply standalone DisplayID 2.0 and mostly, it worked.

I could change the resolution, refresh rate and also the name of the monitor.

But I got a problem and this it what I wanna ask you.
Even if I changed the model, the last resolution still remain in new model.
It's stacking everytime I change the model.
(for example,If I set DisplayID to 4K at the first time and although I changed it to 5k, 4K is still remaining and it is the default resolution)
After I reset with CRU and connect again, finally they are gone.
And also our device was turned into Non-PnP monitor from PnP monitor

I already tried changing manufacturer ID, product ID, serial number of DisplayID but nothing worked.

It looks like PC recognize all models as one model.
Anyone knows about this issue?