Most Internet WIFI routers can use a 2.4GHz or 5GHz signal to provide WIFI.
They both will work, to provide a WIFI connection to your computers WIFI hardware.
But they do not provide, the same exact speed.
If your WIFI router and your computers WIFI hardware, can use the 5GHz signal.
Set it up to use it.
The difference in speed, over a 2.4GHz signal, is 2 to even 4 times faster.
The only issue with 5GHz, it has less distance range, than a 2.4GHz signal.
But it usually is not that big an issue, unless the distance from computer, to the WIFI router, is a lot.
Does usually have less signal strength, because it is easier to block, by stuff in your house.
But I find the drop in strength is not all that much.
You can test the connection speed, by using one of the many speed tests, you can find on the internet.
In a browser search: speed test.
Maybe try to use one, that is not a test provided by someone, that also is selling Internet connection service.
No way, would you think, they would make your speed, look low, to sale you their service 
In tests on my equipment.
I found going from a 2.4GHz to 5GHz improved speed test results.
I see improvements of 3 to 4 times faster speed.
I do see a little speed difference, between different hardware.
The newest hardware, does have the best speed results.
Location of computer to location of router, can have an affect on the speed results.
I have one desktop computer, using a WIFI USB adapter, plugged into a USB base, sitting on my desk.
Moving it to different locations on the desk, changed speed test results.
Note:
When I was using 2.4GHz and scanned the area for WIFI signals.
A lot of 2.4GHz signals were found.
Several of them using the same channel I was using.
Really was no 2.4GHz channel not being used. ( there are only 14 channels and some overlap)
So set my WIFI router to using the less used channel, that was not one of the overlapping ones.
Scanning for WIFI signals only found one 5GHz signal.
That was my WIFI router signal.
Changing to using 5GHz was the way to go.
.
.
For more information on improving WIFI speed.
Good source of useful stuff:
https://www.cnet.com/home/internet/yes- ... fi-slower/
.
11 ways to make your WIFI faster:
https://www.cnet.com/pictures/easy-ways ... our-wi-fi/
.
.
.
