Nexus 7 32GB - addresses screen flickering and troublesome wifi?

I have a Google Play store purchased 16GB Nexus 7 from around day 1. I have had low-light screen flickering and wifi speed issues intermittently the whole time. Mostly it is a minor inconvenience but now that the 32GB model is available, I'm wondering if these issues have been addressed and an upgrade is warranted. My question is does anyone who has a 32GB Nexus 7 still have screen flickering or wifi issues?

Thanks in advance...