Catalyst is the name of the old interface before the Adrenaline. It has been gone for many generations now and replaced by the Adrenaline interface that changes every year too and is radically different looking and feature wise than when it came out as well.
Counter Strike is a game that just plain favors Nvidia. Then on top of that your old card while yes being older tech also was designed for the version of DX that game runs. Then newer cards are not. Polaris is actually even faster than Navi in many old games because of this.
However you take a new DX 12 title or vulkan and it will wipe the floor with the older card.
It may be possible that a change to any of the in game settings could change performance a lot.
You could also ask for best AMD settings on steam, or discord etc... anywhere gamers for that game might be. A lot as you likely know still love the game.
By all means though though do report your experience with the driver to AMD. If they can help they should. Doesn't hurt to ask: https://www.amd.com/en/support/contact-email-form
