Gas Recirculation Valve (egr Valve) problems of the 2014 Nissan Rogue

The issue presents itself when the temperature is above 90 degrees and I have been driving the car for at least 20-30 minutes. When the car is at a complete stop and you transition from the brake to the gas, the car does not immediately respond. It is as if you are not pressing the gas pedal at all. You can press it almost all the way to the floor before the car will respond. When it starts to occur, it is consistent with occurring every time the car comes to a stop. There does not appear to be any other issues while the car is in motion. This is extremely dangerous when you are making a left or right turn or accelerating from a stop light. I have almost been rear ended several times because the light has turned green and my car will not immediately accelerate. I took the car to the dealer on 9/15, about 2 weeks after this started. I was informed that this might be due to the fuel pump recall. They replaced the fuel pump and drove the car without experiencing any issues. As I was driving home from the dealer that afternoon, the issue presented itself again. I called the dealer and was told to bring the car back the following morning. They kept my car for 3 days. They were able to replicate the issue at the dealer while connected to a computer. They spoke to Nissan engineering and sent them the files. Nissan engineering didn't know the cause and said to "drive it until it gets worse". My car was almost at the end of the 36,000 mile warranty. They replaced a brake sensor to see if that worked. I picked up the car and brought it back to the dealer the following week when the issue presented itself again. They recorded more data to send to Nissan. Again, they requested more data from me yesterday. While in the car with the technician recording the issue, my car would no longer accelerate over 20 mph while revving the engine. This car is unsafe to drive.