Delete all the unnecessary files from your device to make sure that the processor is not overburdened. Delete the files which are:
- Big in size
- No longer in useful
- You never open or see
- Are not supported by the device
Avoiding downloading the files that are:
- Big in size
- Not supported by kindle paperwhite
- Looks suspicious (these could contain a virus)
Make sure to have a backup for your files when you delete them it could either be cloud storage or simply transport to another device.