I found this guy who stated that the memory has too much work to do with each cell so that it cant keep up.
"If the bottleneck is indeed memory access time for converting the game map into something for the GPU to work on, then CPU, GPU or resolution shouldn't really matter. RAM and motherboard is what really matters here. Given how big the impact is, it seems moving budget from GPU to RAM could result in a higher framerate in some games even though the computer doesn't get more expensive from doing that." I found another guy saying that most systems hit a 30fps wall due to memory latency bottlenecks. I guess ill have to try to overclock my ram to get higher frequencies and lower timings.