Pika might fix that actually. Most of the patches and custom stuff Pika adds is around obscure and difficult graphics card configurations, with extra kernel modules and stuff like that specifically for gaming on modern graphics hardware. That's literally its main value proposition. You could try a LiveUSB and see if it works any better, but the PikaOS second-stage installer (after the base system is installed) also has a bunch of options for various driver and kernel versions and variations that might help.

That said if you're happy where you're at there's no reason rocking the boat, and Debian's pretty solid. But maybe keep it in mind for next time you feel like trying something different on that system.