So far, this November is comparatively slower vs. last year's somewhat more turbo-charged specialty field, coming from the likes of Lady Bird, Call Me By Your Name and others. Over the weekend, CBS Films' At Eternity's Gate led the pack of limited release newcomers. The Julian Schnabel-directed title from CBS Films, starring Willem Dafoe, grossed $92K from four locations, averaging $23K, the weekend's highest per theater average. Universal release Green Book with…