VRAM overloading and creating major performance issues

So, I couldn't locate this being mentioned already, so apologize if it was. Ever since installing this, it's mostly great. However, my biggest issue with it is that ever 30 seconds or so, the framerate plummets into the ground for a solid minute or so. Looking at my processes, when that happens, it's literally capping out my GPU... For note, I have a 2070 Super. My guess is that this is something that occurs specifically with the JKGFX mod, but this one doesn't seem to acknowledge the same config lines as that does. For that, there's a line that can be used to set the VRAM use for things, to avoid the overload and framerate drops. If there's a way to modify this with OpenJKDF2, I can't find documentation anywhere on json config lines to alter it. I really do love this project, since it lets me play two of my favourites, even now, but the constant GPU capping is making it very annoying to actually play properly. If it's not JKGFX, I dunno what else it could be, though. But it happens with both JK2 and MotS in the same ways. Thanks.