HDarmon

Thanks @Dujith, this ended up fixing the issue. I still find it strange that it wasn't auto switching to 5ghz like it used to despite the faster speeds that im now getting.

Everything is exactly the same as it was previously when I was using 5ghz. The only things that will have changed are just generic windows updates and other components drivers being updated

After noticing some connection issues that I have never really had before, I checked the properties of my connection and noticed that it was now connecting via 2.4ghz rather than the 5ghz that it used to. I have both a router and wireless card (N900 TL-WDN4800) capable of 5ghz and after troubleshooting for an hour or two I haven't gotten anywhere. One thing I have noticed is that I have no option to set a "preferred band" in device manager, as shown in the screen shot Any suggestions would be greatly appreciated.

I've just tried switching to hdmi (it supports 120hz over hdmi) and the monitor is now saying it's at 120hz. Perhaps the included displayport was faulty??

Just tried it but it didn't change anything

I'm using display port and a 1080. I thought I'd looked through all the monitor settings and couldn't find anything, let me just check the manual again.

So I've recently purchased a new monitor, and when changing between 60hz and 144hz in windows settings I couldn't notice any difference. At first I thought it was just me not really noticing it, however after checking the monitor settings I noticed that even though it's set to 144hz the monitor is only displaying 62hz (see photos). Just wondering if anyone could offer any help in troubleshooting the issue, thanks in advance. Also apologies if this is in the wrong place, it's my first time posting here.