Five Rings Quantitative Researcher interview questions

Online assessment on probability questions. Each question has either 2 or 3 minutes limit. After that I had a short HR call. Did one technical round with a researcher who asked me about algorithm.

First round: Self introduction + quick ask quick answer. Only 30~45 sec for each problem. There were 15 problems in total. Totally disaster but still move forward. Second round: kinda bad experience. The interviewer was late for about 10 mins. And he switched among laptop, conference room camera and phone. The question was about poisson process.