Cat1092....I just spent some time testing and fixing my download speeds. Turns out I have not been getting the correct speed for 3 or 4 days since a power surge from lightning damaged my modem.
I took the modem to my ISP's office and exchanged it....one advantage of having a small local ISP. I'm now back up to speed. I did try out the Down Them All! years ago and it
had some kinks so I have not used it since. I will try it out again and have installed it in Firefox.
buddy215, you may want to give Down Them All a shot again if it's been some time since you last used the download manager.
I began using it back in 2010, when I was a Microsoft TechNet member, because their download manager (Akamai) had way too many wild swings in performance & I have quite a library of these ISO's (now stored on a 150 GIB partition on three HDD's & a backup). Found the Down Them All DL manager & have never looked back, it milks every last drop of speed possible to get what you want, often faster than what you're paying for.
If by chance, you have the NoScript extension on Firefox, be sure to whitelist the Down Them All site, it may help. Also, some sites will still be slower than others, yet still the good thing about a DL manager is that if your connection momentarily breaks or drops, you won't lose the connection, the DL manager keeps trying to connect every few seconds up to 15 minutes & picks up the download where left off.
There's nothing more aggravating than having a large ISO download breakup when almost complete. Sometimes, USB wireless cards will cause this, especially the ultra low cost models (sub-$10) that gets hot in 5 minutes with a couple of Web pages open. I have one of the AZIO brand (N-150) purchased as a Shell Shocker on Newegg many years back when cash was tight, purchased a Netgear 'G-54' PCMCIA card used on eBay for $20 & still works to this day.
At any rate, I feel that you should give DTA a shot again, maybe it's better now, or your extensions, if any are installed, won't interfere with performance. I cannot begin to count the many GiB's (probably into the TiB's) of downloads I successfully grabbed with DTA, including both of these Peppermint ISO's. Note that you do have to select the right type of checksum to the left after copy/pasting it into the box, to the left of it will be several choices, some higher than SHA256 to choose from, selecting the wrong one will cause issues, as well as not copy/pasting the full string into the box. Anyone can make a slip, have made a few in my days.