Low resolution EXR Previews

Hi,

I am using after effects to preview my exr sequence rendered out from Houdini. Normally, even though it is quite slow, I am able to preview my exr sequence in full quality after waiting a bit. However, without fast previews turned on, my sequence play back is super fast, but it is on very low quality, feels like it is on quarter resolution even i have set it to full. When it is paused, the frame is full quality though. 

Does anyone know if there is a setting I should change?

This is my preview windows settings:

I have tried playing around with adaptive resolution limit but nothing really changed.

This is when preview is paused, which is correct on full quality

This is during preview playback, feels like quarter resolution even i've set it to full: