Axis cameras equipped with the ability of outputting 50/60/100/120 FPS should note.
Enabling the option of WDR (wide dynamic range) will automatically reduce the output of FPS of the camera's image by 2, as per example 25/30/50/60 FPS
In addition using the BDC (barrel distortion correction) option on the lens, further increases the load on the CPU.
With regard to BDC it would be better to use the zoom feature of the camera, thereby minimizing CPU processing power and further loss of FPS.