Hi RMerlin,
I am having some performance/connection issues on 5G with .50 on a AC87.
Somewhat similar to the old bug that was fixed with 376.49_5.
The old bug saw some performance deterioration on 5G, forcing the user (i.e.: me!) to reboot the router.
This was fixed around 376.49_5 and had no problems for about a month.
I upgrade to 378.50 and I am now getting issues on mobile devices (iphone, android) and appleTV, Mac connecting on 5G... but this is somewhat different... this time they work fine, then suddenly they don't get any internet access (but the connection still shows full strength 4 bars to the 5G network), the difference here is that I don't need to reboot the router, I can just switch to 2G... everything works fine... then back to 5G.... and everything works fine until it stops again. I probably get that about 3 or 4 times a day.
The *only* difference is that this time I enabled the network protection features: Malicious sites blocking, vulnerability protection, infected device prevention and blocking.
By the way, I am not going on "bad sites", this is just normal browsing (Cnn, etc). I don't get any alerts or logs.
Nonetheless, I have now disable all those options so the settings are exactly the same as before and will let you know if it makes any difference...
But I just thought I would post something now in case someone else has some issues with 5G!
Cheers,
B.