Thanks to user Hotel Bravo who found this workaround. I've found a solution! Well, sort of -- it's a workaround, but it solves the issue.          
Hello,  I have been using the DDM 2.0 application alongside my AW3423DWF to manage HDR profiles with certain executables. I found out that the application causes certain key binds of mine I rely upon in-game to become unresponsive, including but not limited to ALT+P and ALT+T. Per the program manual, ALT+P is reserved for the KVM switch function. However, because my monitor does not support KVM, the associated KVM page in DDM 2.0 (which is shown in the manual) does not appear for me and I cannot delete the key bind. I'm sure you can understand how frustrating it is to have a key bind that does nothing and cannot be disabled for use in other programs.  Additionally, ALT+T toggles vision engine modes on my monitor despite Vision Engine also not showing up in my DDM 2.0 application. I think the functionality should either not exist or should be made visible in the application. I would really appreciate it if someone could pass this along to the developers of DDM 2.0. Thank you. 
AW3423DWF, DDM 2.0, Key binds for unavailable functions