Premiere severely drops frames when I move the program monitor to my external monitor

I'm running into a very weird issue that I haven't seen solved on here or other forums. I'm running Premiere Pro on my Dell XPS 15 9500, 64GB RAM, Intel Core i9, on Windows 11. Runs seamlessly, even with 4k footage playback at full res. I have a second monitor, a Dell UltraSharp 27 4K USC type C connections. Premiere works perfectly on there as well. The issue is when I place my program monitor on my second monitor, keeping the rest of the workspace on my laptop, there is severe lagging and it drops frames like nothing I've seen. 

Things I have already tried and concluded were not part of the issue: proxies, switching the progam monitor to the other screen, matching resolutions between screens, updating Premiere, changing the connection wire, changing connection type from USBC to HDMI, clearing caches, uninstalling and reinstalling Premiere, updating the monitor software, updating my laptop's softeware, changing rendering and playback settings, reallocating RAM to prioritze Premiere. Basically any basic troubleshooting you can find on the web I have tried. It can run Resolve between two screens so I'm sure this might be a Premiere Pro specific issue? I'm at a total loss so any and all advice is appreciated!