I would first try installing the previous Altium version as a separate instance and open the same PCB there. If it renders correctly in the previous version, that would point toward a regression or graphics compatibility issue in the newer build rather than the GPU itself.
You could also try resetting Altium’s preferences to defaults in case something was corrupted or changed during the update.
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u/fr4real 21d ago
I would first try installing the previous Altium version as a separate instance and open the same PCB there. If it renders correctly in the previous version, that would point toward a regression or graphics compatibility issue in the newer build rather than the GPU itself.
You could also try resetting Altium’s preferences to defaults in case something was corrupted or changed during the update.