AMD has released a brand new driver for its graphics cards. According to the release notes, the AMD Radeon Adrenalin 2019 Edition 19.3.1 driver is optimized for Devil May Cry 5 and improves performance by up to 4% on the Radeon RX Vega 64.
Source: N4G PC AMD Radeon Adrenalin 2019 Edition 19.3.1 released, optimized for Devil May Cry 5