Wifi on Ipad way too slow, no software solution so far, antenna broken?

Hi everyone, I have an

iPad 2 (model A1395, iOS 9.3.5) and a iPhone 4 (iOS 10.0.2) and a Macbook (OS X El Capitan, 10.11.5). All connected to the same Wifi router.

I'be been having slow internet speeds (particularly with videos, which stop every minute and need to be completely reloaded then=> unwatchable) on the iPad only, the other devices have good connectivity. I have posted previously on this forum (see below) listing some diagnostic results as well as measures I have tried to resolve this problem, unfortunately to no avail. This issue has been going on for months, but I think i do remember a time when iPad connectivity was just fine, like on the rest of my wifi-connected devices.

I am now wondering: Is the wifi-receiver on my iPad possibly damaged, and would this then be the cause for the connectivity issues? The question this post leads up to and that I hope to have resolved is, how can I test/check whether the wifi-receiver is damaged? Any way other than going to Apple Store? I may be able to open the ipad and have a look, if that is necessary and someone can give me some friendly hints on how to do this;)

Any help will be greatly appreciated:)

And here, for completeness, my previous post on this topic, for reference on connectivity speed of all my wifi-connected devices as well as "solutions" that hav unfortunately not worked so far:/.

---------Previous Post, ca. October 2016----------

I have an iPad 2 (model A1395, iOS 9.3.5) and a iPhone 4 (iOS 10.0.2) and a Macbook (OS X El Capitan, 10.11.5). All connected to the same Wifi router.

Wifi on Macbook and iPhone is fine, while Wifi on iPad is slow.

Running HTML 5 Speed Test (http://speedof.me/) in Safari on each device i get following results:

iPhone:

Pass 1: Download 35.04 Mbps, Upload: 1.99 Mbps Latency 38 ms

Pass 2: Download 34.5 Mbps, Upload 2.05 Mbps Latency 32 ms

Pass 3: Download 28.71 Mbps Upload 0.87 Mbps Latency 38 ms

Pass 4: Download 30.53 Mbps Upload 2.08 Mbps Latency 53 ms

Pass 5: Download 35.89 Mbps Upload 1.85 Mbps Latency 38 ms

Macbook:

Pass 1: Download 32.82 Mbps Upload 2.03 Mbps Latency 25 ms

Pass 2: Download 35.83 Mbps Upload 2.01 Mbps Latency 25 ms

Pass 3: Download 35.13 Mbps Upload 2.05 Mbps Latency 23 ms

Pass 4: Download 35.56 Mbps Upload 2.07 Mbps Latency 24 ms

Pass 5: Download 35.45 Mbps Upload 1.98 Mbps Latency 25 ms

iPad

Pass 1: Download 1.33 Mbps Upload 0.64 Mbps Latency 50 ms

Pass 2: Download 4.52 Mbps Upload 2.03 Mbps Latency 51 ms

Pass 3: Download 23.46 Mbps Upload 1.82 Mbps Latency 56 ms

Pass 4: Download 14.23 Mbps Upload 1.66 Mbps Latency 48 ms

Pass 5: Download 3.09 Mbps Upload 1.71 Mbps Latency 78 ms

As one can see, iPhone and Macbook have high and consistent speeds and Latencies, while iPad has greatly varying Speeds, and, unfortunately, mostly very low.

This results in issues streaming videos, music, and even just surfing the web, on the iPad.

I have tried several things the web tells you to do:

https://www.geckoandfly.com/9439/slow-ipad-wifi-connection-reset-and-flush-dns-n etwork-cache/

01 – Reset / Flush Network Cache

02 – Change DNS to Google DNS

03 – Update iOS

http://www.iphonehacks.com/2015/09/fix-ios-9-wifi-problems.html

Force Restart

Forget Wi-Fi Network and Rejoin

Disable Wi-Fi Networking Services

Reset Network Settings

Set Custom DNS

Restore and Setup as new iPhone/iPad

After last step (restore and Setup as new iPhone/iPad) i tried HTML5 Speed Test again, results are still slow.

These slow Speeds mean I can't stream music and videos, and even surfing basic websites is pretty slow.

All the tests were done with iPhone, iPad and Macbook beside another at a distance of about 1 meter / 3 feet from router.

Thanks!

C