Have been using the GBT X99 UD3P Mobo with a 5820k oc'd stable to 4.2 over the past month or so, I have noticed that memory performance seems to decrease every time I wake from sleep and sometimes wake from sleep just fails. This is because the NB/Cache frequency gets fixed to 2.4 Ghz on resume and never goes higher (should go to 3.0 Ghz on auto and I have set it to 4.0 on uncore without issue). I've tried every combination of setting possible and also reverted the bios to F2a to no avail. Sleep only works normally if I set everything (including memory frequency) to default, enable any OC setting whatsoever and the cache frequency does not come back to normal upon sleep. So running everything at stock now as I need S3 sleep to work. Anyone else encountered something similar?