There’s a hardware problem affecting Intel 13th/14th gen CPUs, mostly desktop ones. This made the rounds through the press last year and has been on forums etc. for much longer than that. For months, we thought this was a rare bug in the decoder, but from stats in Epic’s crash reports for Fortnite (as well as stats for other Unreal Engine and Oodle licensees) it was fairly striking that this issue really seemed to affect only some CPUs.