Dear Samsung Member,
Greetings from Samsung Customer Support!
Kindly follow the below mentioned step to improve the performance of the device
1. Perform Battery Optimization: Settings > Select Device Maintenance/Device Care > Optimize > Optimize all options like Battery, Storage and Memory
2. Adjust screen timeout settings: Settings> Display> Screen timeout> Select minimum screen timeout.
For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Send feedback > error report/ask questions).
Thank you for writing to Samsung.
Samsung Customer Support