This Seeking Tech tutorial will explain how you can turn off motion blur and chromatic aberration in Marathon. Follow the video and text guide below:
Step 1: Open Loadout menu.
Step 2: Select Game Menu option.
Step 3: Select Settings option.
Step 4: Select Video option.
Step 5: Turn the Motion Blur setting to Off and then select the Apply option above it.
Step 6: Turn the Chromatic Aberration setting Off and then select the Apply option above it.