I'm 100% sure that people like you are doing something wrong that you have to install older drivers. Did it as always with DDU. Many have this problem that older drivers make it worse and it's also not good if you play other games.
i updated all my nvidia drivers and reinstalled csgo
i also reinstalled my vibrancegui and got the best settings like #7 and #10 said
i tried looking into the old nvidia driver like #12 said but i found that just updating my drivers to the newest release is better