Gyroscope is used for Virtual Reality whereas Accelerometer is used for motion based apps and games. If the brightness and contrast is set to automatic, the accelerometer seems to malfunction on the Redmi Note 3 which causes motion based games like racing games to not function properly, so set your brightness manually and set the contrast to increased contrast or standard so you can play motion based games flawlessly. On Redmi Note 3, this is a bug which seems to be hardware related as it hasn't been fixed in any of the software update and the only solution is to set the brightness and contrast manually.
Si according to me they should improve it. Thank you for reading my review.