No AA in V8, good in V7 on same machine..?

(8.0.21327.16305, 2021-11-23)
Not getting any AA in V8.
Same model is fine in V7.
Both on same machine, identical display settings. both set to 4x AA.

You can see the difference in the two screenshots.
Any idea on what to check next ?


please post the results fro running the systeminfo command in rhino,.