Oil pressure issue

Hello everyone, I'm just reaching out to see if anyone has had any issues closely related to mine.

I have a 2009 CTS-V it has modifications done that I will list just for context, ported intake and blower, 127lbs injectors, smaller upper pulley, a big cam, headers and full exhaust

But I recently have had low oil pressure, cold start is normal starts at 40psi and drops to 24psk or so once the engine warms up. City cruising speed and idle are also around 20 to 24psi which is normal. But at highway speeds it's still around 20 to 24psi. Also when I brake to slow down and come to a stop it will drop down to 15psi. I don't hear any ticking or knocking from the engine and the car runs and drives like normal, it doesn't feel any different. But I also haven't driven it much since getting the "low oil pressure, stop engine" alert.

If anyone has experience with what the problem might be or has any ideas it would be appreciated.

Added info: oil level is good and I recently change oil and oil pressure sensor as well as the screen and that didn't fix the problem.