If you are having trouble at 2.4GHz then 5GHz is likely to wash out as it rarely has the reach of your 2.4GHz WiFi.
Here we use a lot of different models but never and I mean never found a 5GHz connection to work well when 2.4GHz isn't performing at top 2.4GHz speed.
Here's the last USB I picked up for my PC Medic bag. https://smile.amazon.com/gp/product/B07BMLPYJS/
I see it's out of stock but there are many other 1200 megabit dual channel adapters on that page so it's a cheap thing that works for me.
But again, those that are at the outer reaches of WiFi will have to test a few adapters to see which one works best for them. Let me repeat that I do not approve of fixing coverage issues this way since the client will only call back in with more connection issues later.
What Wireless Network Card Would You Recommend Out Of These?
I am getting a new wireless card as i think my Asus PCE-N15 11n may be on its way, as im starting to get some low signal quality since updating the drivers. Plus would like to upgrade to a 2.4ghz - 5gz to be able to use the 5ghz and have more mbps and AC.
I have found a few im interested in a read a few mixed reviews on each one. I would like to ask what your recommendations would be?
What i have looked at with:
Asus PCE-AC68 Wireless PCIe Card
I particulary like this one as i like the feature of its own base stand and it sounds pretty good.
TP-LINK Archer T6E Wireless PCI Card
Another one i spotted but does have lower Mbps then the Asus PCE-AC68
TP-LINK Archer T9UH USB Wireless Adapter - AC 1900, Dual-band
Not sure what USB is like? but sounds good.
So what would be your recommendation/ opinion?