So after searching around the forum/internet for posts where people had a similar problem
slow internet, slow wifi, other distros no problem, ethernet/wifi, no difference, ect.
I narrowed down the common problem everyone has seemed to have had
for many years now…
which was with the latest kernel being out of lockstep with the wifi driver
steps I took to resolve the issue
Looked up my wifi card in terminal
inxi -F | grep iwlwifi
Searched for the name of my wifi card which led me
to a link on linux dash hardware dot org
which pointed out that…
The device is supported by kernel versions [from 5.7 to 5.12]…
I had 5.15-LTS installed, on a fresh manjaro, and was getting 1-3Mb/s download speeds,
So I went into Settings-> Manjaro->Kernel
And picked out 5.10-LTS from the list, a slight downgrade, with the proper support
for my intel wifi card/driver. Installed it.
Rebooted, held shift key to get into grub menu, and selected 5.10-LTS from the advanced grub options
Now internet works perfectly as normal. 20-50-100Mb/s : D
I was real excited after narrowing down the exact problem it seems like a lot of people were having.
Apparently it’s a common problem for manjaro/arch linux in general because of how they differ
in dealing with the kernel compared to other distros.
I think I must have spent 2-3 hours searching countless posts about this problem, and which
all had a wall of text of different solutions and ideas. It occurred to me that the common denominator
was the kernel/driver module for wifi.
Anyways I made an account to share my experience, and hopefully help others, since this is obviously
a common problem on Manjaro/Arch. Good Luck : D