http://www.techradar.com/news/intel-admits-that-meltdown-and-spectre-patch-problems-affect-newer-cpus

You may recall that last week, Intel warned that its fixes for Meltdown and Spectre had caused elements of instability with some of its older processors, but now the firm has said that the stability gremlins also pertain to newer chips. Much newer chips, in fact.

In a news update which clarified that firmware updates have now been issued for 90% of Intel’s processors introduced in the past five years, as planned, Intel restated that some customers have reported ‘more frequent reboots’ on Haswell and Broadwell (4th and 5th-gen CPUs) powered PCs after the patch had been applied.