Yup, same thing here. Bought highest range (u70 and centurion Rx), total 3k. But park under hot a while, the car become microwave d. Not sure how is other brand performance, so I can't really bash raytech.

But i am disappointed with the performance

Please tell me which brand can prevent car hot when parked under hot sun.

/k expected ice cream in car to not melt with 3k tint

Dear customer, we appreciate your feedback. First of all, we need to verify you are Raytech genuine customer. Can you please tell us which package you took? Can u send us your RECEIPT ?

Raytech is Genuine company which selling genuine products to customers. We believe there has some misunderstanding about heat performance.
For your information, none of the window film brand has automobile film make your car "not HOT" after parking under the extreme hot sun more than 30 minutes. The heat will trap inside the car and become hotter and hotter. This called "Green House Effect". It is only about which brand of tinted film can keep the lowest temperature. From my personal experience, RAYTECH RX take only 5 minutes to cool down my car, although I park my car for several hours :）

Below is a real meter testing video about what's the temperature after parking long time under hot sun and how's window film helps : 
It is mandarin version, you can try to understand the meter testing part:



Summary of video:
1. The temperature in the car will increase gradually after parking for long time. It's called "Green house effect".
2. For no tinted car, the temperature in car may increase to 62 C after parking for long time. 
3. For Tinted car, the temperature in car may increase to 42 C after parking for long time. 
4. Don't leave your kids or pets inside the car because after 10 minutes they might have danger in life.
5. For tinted car, 5 minutes can cool down the car. Without tinted, need at least 20 minutes to cool down the car.