I have been experiencing an extreme drop in my download speeds every night around 5pm and it continues until 6am. This happens every single day. I'm currently downloading at 1656 KB/s during the day, I'm able to reach speeds of 100114 KB/s. (On a wired connection).
I worked with a very beginner technician via chat that basically asked me to reset my router so he could login and check some settings and when he finished he basically set it's a problem with my computer. I had to go back in and reconfig my router properly after he was done. It's not my computer, I'm transferring data from my computer to my internal NAS at the same speeds I have always been.
It's seems impossilbe to get a skilled technicain on the phone to assist. I need to get the speeds I pay for or I'll have to start looking for another provider.