Samsung S95B 16:9 Game Mode looks broken. It appears to be scaling the image with a bilinear filter i.e the 'MipMap' option is forced on that it has for the other two
Amazon.com: Samsung 7 Series NU7100 50" - Flat 4K UHD Smart LED TV (2018)
Amazon.com: Samsung 7 Series NU7100 65" - Flat 4K UHD Smart LED TV (2018)
Samsung's 2019 QLED UHD TVs: 8K TVs Revamped, 4K TVs Get New Panel & Backlighting