Welcome Dats.
Some motherboard manufacturers (known to be msi from forum) have released BIOS/Firmware updates to suit 22H2. Check from their website or from windows update>optional updates if your motherboard has any BIOS/Firmware update.
If there is possibility to undo latest version installation of 19045 may try that through either recovery environment or system restore. As the PC was sitting idle for 2 months it may still be possible to go back to older version.
If going back to 21H2 not possible & you have spare drive (SSD's) & older version of windows 10 ISO, like 19043/19044, may install that build on the spare drive, install full set of drivers & install any of the game causing issues now. If the issue started after installation of 19045 that will have an explanation.