As Boxcryptor is then busy handling all the file operations of the background process, Boxcryptor has less time to handle file operations of other application and thus might feel slow. Slow performance of the Boxcryptor drive might be caused by a background process performing a huge amount of file operations on the Boxcryptor drive without the user noticing. A Background Process is Causing High Load If you have trouble with one of your regular apps and performance is your priority, you could try out an alternative, to check if it can deal with Boxcryptor’s encryption better. This results in many calls to Boxcryptor and leads to slower performance. Some apps, however, write each byte one by one.
In this case, Boxcryptor only needs to be active a few times during encryption and performance is not affected. Well written apps write their files in blocks. Boxcryptor simply acts as a filter, taking read and write requests from the operating system, and encrypting them on the way. When an app is slower than usual when used in combination with Boxcryptor, the app might have a problem with handling Boxcryptor’s encryption. An App is Slower Than Usual When Used With Boxcryptor
