You need to provide some useful information - OS, system spec (especially GPU), whether it's different if you turn GPU support off...
Windows 7 64bit
8TB hard drive space
NVIDIA GeForce GTX 560 Ti
This worked prior to the recent 6.1 Lightroom update.
And, if someone knows the answer based on the informaiton you've provided, you'll get an answer.
Be clear that this is a user to user forum - we don't live here - and you haven't answered the GPU on/off question, which is the most important piece of information I asked for.
Wow! Alrighty then.... perhaps Adobe should make it easier to get assistance so that one does not have to put up with arrogance such as yours!!...
With that said, you are correct...I forgot to answer the GPU question. It makes no difference.