[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] balleron24z:
Here's my roughly 24-hour check-in with CRC4, formatted like wildsky2's post:

Edit/Update: Battery isn't doing so well after letting the system settle, but I feel this is more a Google Play Services issue as opposed to the ROM itself. Performance is suffering with some apps, and I actually had a soft reset today when using a DAW app with a USB audio interface, which happened after a few lock-ups of my phone. Any time I reboot the phone, I have to switch WiFi Calling back on, and it works fine afterward, but is a minor annoyance. The stock camera fails at recording video period, so I have to use a modded Snapdragon Google Cam port and that works flawlessly. Pictures in the stock camera app are fine, just videos that sometimes freeze the entire phone.

CRC4 is better than BRA1 in some ways, and in others it's a step backwards. I still think it's MY daily driver status (as I like working to fix bugs, within reason), but definitely not the average consumer.

Battery

: After running BRA1 for months now, and comparing my 24 hours with CRC4, I can most certainly confirm that Oreo for the S7 edge, using unofficial OTAs, doesn't have as good of battery life. I could list my installed/running apps and settings to show how I averaged 4-5 hrs SOT on BRA1, but I'm using the same exact settings on CRC4, with the same apps, and at 42% battery, I'm at 2hr33m SOT. We'll see what I end up at, but while that's not bad, my deep sleep battery drain isn't as good. While screen is on, it's a negligible difference.

Performance

: The entire OS feels much faster in Oreo than in Nougat. Just feels more like butter, very rarely dropping below that glorious 60hz refresh. I've got animations set to 0.5, just like in BRA1, and that helps with getting into things quicker, as far as perceived quickness. There are some odd performance issues with random apps, like Snapchat (a steaming pile, but did run better on Nougat), but everything else feels much better. GPM opens and responds MUCH better, along with Messaging (stock app) not randomly lagging across screens. I'm impressed, and this makes it easy to palette TouchWiz, now known as Samsung Experience.

Bugs

: Upon first use, had issues with WiFi Calling disabling itself, but after activating it about 3 times in a row (LOL) it stuck, and has been flawless. Using Gboard, one can now insert GIFs as attachments, but they are sent without a file extension, so they don't properly show up on either side. Saving the attachment, renaming the file extension to .gif, and re-sending works, but that's a pain. I'm noticing issues with apps that sync in the background (like Facebook Messenger Lite and Snapchat) where if I exit them (but don't swipe to close) before they finish whatever they're doing (for example, if I'm sending something and it doesn't complete), the sync stops and sending fails. I'm also noticing issues with GCM syncs not pushing to my device frequently enough, and even when I'm in an app expecting something to come through, seems like it's sluggish. No issues with WiFi or Bluetooth performance, all of the IMS-based stuff works great (that is, AT&T's Video Calling, WiFi Calling, Advanced Messaging, and of course, VoLTE and HD Voice).

Overall, CRC4 is good enough for DD status, though I will be flashing to official when it comes out. Not sure I'm gonna mess with CRC5, even if there are marked improvements.

---------- Post added at 05:11 PM ---------- Previous post was at 05:05 PM ----------

I had this issue with CRC4. What I did was waited about a minute after the download failed, then tried again, and I sat and watched the zip download in my downloads list in Chrome. If it fails, I'm gonna go ahead and try to download CRC5, and if I get it and you can't, post back and I'll upload it to my Google Drive for you and anyone else.