NVIDIA Software QA Engineer interview questions

I applied online and the recruiter scheduled a 45 min phone interview for the following week with the hiring manager. Interviewer asked various questions regarding the logistics of benchmarking a given game, how certain graphics settings affect performance, and whether or not I would hypothetically certify a game's performance based on certain performance metrics. I emailed the recruiter a week later and was told they were not going forward with my application. Rating this interview negative soley because the recruiter gave me no feedback whatsoever, citing Nvidia's policy.

There were 2 rounds of Technical interview and one round of HR interview. First round was telephonic, second round was video conference. Finally one short HR interview. Overall difficulty was average.