The 1st image is just a tad grainy...did you have Sharpness on any setting other than "Off"...??
The 2nd image looks less grainy ...but smears (bottom half of right SI and top half of left SI) would possibly indicate the boat turning during its displayed history track...causing the "outside" arc of the boat turn to skew that side of the SI image...
(If the smears in the SI image started and stopped at the same time in the displayed history...and identical left and right ...it would indicate the Chart Speed was changed during the displaying of the screen history)...
They both are still very good shots...(looks like a few "possible" fish around the stumps in the top left of the 1st image..)
Rickie