Input Recording/playback

We have been observing blocky mouse inputs when setting mouse sensitivity to higher values. We set our sensitivity globally by setting appropriate FInputAxisKeyMapping::Scale values to the desired sensitivity (acceptable range of +/-[0.1 4.0]). Setting the mouse to generate the desired DPI vs calculating the same DPI (via the sensitivity scaler) is producing different results.

Normally I would do such testing with an input recorder (provided by the first parties) however after trying multiple recorders I have not yet found one that generates the same engine response as live input do.

Has any one else had blocky inputs at high sensitivities?

Thanks for help.