Upcut, downcut, straight cut?

I am making picture frames, cut from one piece of wood. I first cut a countersinked area on one side, where the picture is going to go, then cut the shape of the frame using a large round router bit, then I cut it all out of the workpiece using a 1/8" bit. The area on the inside border of the frame where it was countersinked is about 3/16" above the wasteboard, and the edge I cut there always comes out a bit fuzzy, whether I am using an upcut or downcut bit. Would a straight cut work better there?

Seems like Straight bit is giving the best result. Watch.

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My straight cut bits leave a pretty clean edge but I’ve only used them in plywood so far.