I understand, but it's more a matter of trying to make sure i'm getting what I am paying for. If i'm not achieving anything close to the advertised speeds because of a firmware issue with the hardware, or a hardware issue itself, then I would be better off subscribing to a 500mbps plan in the future - if hardware change is not an option (which it is). Seeing others having a similar bottleneck in upload speeds should be a point of discussion no? I wonder if they've found a solution or fix to get rid of said bottleneck.
I do empathise with you, everyone, me included, wants to feel assured we are getting what we paid for. BTW, i'm on 500Mbps plan, and have not had problems with lack of bandwidth. to me, latency (responsiveness) and international speed is more important than local raw speed, but that's my personal view.
to resolve it, you need to look at the entire "chain of communications" to find the weak link or bottleneck. if you look at my list of factors which can cause slow speeds, you can use it as a starting point to identify these points eg:
a. device capability
you didn't mention your router model, but at the speeds it tested, it sounds like a recent model, being able to hit close to the 1Gbps plan speeds.
what wifi-connected device are you using? (apologies if i missed it). if the device can't communicate above a certain speed, then that is the limiting factor.
b. channel width. since you are reaching 200Mbps, i assume you are on 5GHz band. is the channel width set to 20, 40, or 80MHz?
c. wifi channel interference - are you using the same channels that your neighbour is using?
if the channel width is wider than 20MHz, does the wider channel overlap with your neighbours?
d. are there slower/legacy devices on the network?
e. is your speed test run as an app or within the browser?
f. there are other wifi optimisations in the Asus menus, but usually will rarely need to touch these
That said,
@xonix has listed some good points in his post (
https://forums.hardwarezone.com.sg/threads/maylyn-networking-asus-zenwifi-xt8.6177953/post-139886602)
Since your wired connection can hit close to the 1Gbps plan (as shown in the router speed test results), then the cause lies between the router and the device. 200Mbps usually does not cause useability problems especially for handheld devices, unless your PCs are connected by wifi only, and they are being used for heavy uploading/downloading.
if you are ok with posting your network setup, devices connected, router settings, others with similar setups will be able to provide more detailed assistance.
cheers