Diamonds are Forever, when its not being boring its being the most misogynistic film in the series (quite an accomplishment, really), plus offensive gay characters. And Connery is quite clearly not giving a shit all the way through it, and it has his worst toupee in his entire run. Nothing about this film is good.
A View to a Kill wastes Christopher Walken as a Bond villain. Jeez, man, that's terrible. The film itself is pretty damn shitty as a bonus, just poorly made all around, for being Hollywood's biggest perennial action franchise A View to a Kill is shockingly inept at pretty much everything it tries. And of course, Moore was less convincing in the part by then as Connery's hairpiece circa Diamonds are Forever.
Its one of those two, I'm not sure which.