FT:slider photo blurry

Hello!

Im having a bit of trouble making the slider images on my web look good. The slider has three slides. Photos 1 and 3 look pixelated when looking at it on desktop.

Photos on the slider have these sizes:

1.Spoons
2500x1667px
952KB

2.Skin
2500x1667px
378KB

3.Scissors
2500x1667px
526KG

Photos 1 and 3 are the ones that are pixelated.

Any ideas what I could do to make them look ok?

Thanks!

The page I need help with: [log in to see the link]