At speed 5, no. 30 FPS is normal at speed 5 for this game. You don't need a higher video throughput or smaller input latency for this kind of game. It's fine.
Your GPU is not the bottleneck. It's the CPU.
At speed 5 the game is running as fast as possible on your hardware. Your CPU is already pretty fast. There is nothing more you can do to speed it up.