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I was waiting for the solution of bug defined as UE-20358 in 4.10. Currently distance field shadows are not working for some of AMD cards such as R9-2X series. Has that problem been solved?
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That was due to a driver bug which AMD has fixed, but I’m not sure if the fix has made it into the latest released driver yet. We weren’t able to find a workaround, so the new driver will be the only fix.