Image rotation, slow performance

[3rdparty]

I am using RotateImage to display rotated images in a container field.  The images themselves are in an archive on the local machine.

The plugin and function work, but make browsing through the database painfully slow compared to browsing through unrotated images via a layout that has a container field calculated from the raw (unrotated) URL.

Obviously the plugin is doing some work when presenting new records and therefore some performance degradation may be expected, but is there any way to minimize this slow down?

Some details:

- Images are in .jpg format and I cannot change this

- I am not specifying any background in the RotateImage function

- Software: Filemaker Pro 12 adv, OS 10.10.3

- Hardware: MacBook Pro mid 2012,  i7, 2.9GHz, 8GB, 256GB SSD

 

Thanks in advance