Counter-Strike 2 - Release Notes for 10/19/2023 - Steam News
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Added a startup check for incompatible AMD graphics drivers. We will now begin reversing VAC bans for affected players Fixed a bug in Windows 11 Auto HDR that led to smokes intermittently disappearing Miscellaneous bug fixes

Recently there was a thing where VAC would erroneously flag AMD's antilag+ feature as cheating, and issue a ban.

AMD then quickly disabled the feature by default but now Valve also patched detection for it and is now, at least according to these patch notes, reversing the bans.