How to improve FPS on computer with low configuration graphics card?

The graphics card of my computer is based on GPU(Red Hat QXL GPU), and the configuration is very low. After the initialization of cesium, without loading any data and closing the terrain, the FPS of drag interface is only about 5-10, and the CPU utilization rate is 80%, Are there any settings that can improve FPS?
Cesium1.72,Windows7 64bit,RAM 8GB, Chrome 85.0.4183.83 32bit