CPU spike to 100% on the Railway to Golmud map

Look at those spikes around Objective B on the Railway to Golmud map "Conquest". This happens only there! The rest of the map doesn't have this problem.

My CPU usage normally sits around 55–65% on the rest of the map, but as soon as I enter the building near Objective B, it jumps to around 86–100%. What is going on, DICE?

Also, the packet loss is ridiculous!!!!