Comment # 54 on bug 1112824 from Dead Mozay

Today I bought a new laptop, installed openSUSE Tumbleweed with GNOME, looks
bad, installed kernel-vanilla, It got a little better, tried to turn off all
the patches on spectre, meltdown and l1tf (pti=off spectre_v2=off l1tf=off
nospec_store_bypass_disable no_stf_barrier) It became a little better, but
still bad, on the workstation with the enabled hyper threading performance is
terrible too, if you turn off HT, it becomes much better, Unfortunately on the
laptop HT can not be disabled. Who has the ability to turn off HT, check how
you will behave GNOME. kernel options do not help, you need to disable the
BIOS. Again, this problem is only in openSUSE.