Windows 10: Horrible internet speed

Since I had a power surge 2 weeks ago I haven't been able to reach anywhere near the 35mbps I purchased through Time Warner (Now Spectrum)

I thought it was the modem they provided was somehow affected so I bought my own compatible modem.
An Arris Surfboard SBG6580 with wifi capability.

My speeds are on average 2mbps and for only a moment it reached 21mbps while the time warner agent "Jump started the connection."

Should I use my Linksys router? Are there any settings I should tweak to get a decent speed again?

They are sending out a technician in a few days if the problem persists to check the lines outside which the power company took down 3 times to replace all the poles on my street.

:)

 

How do i download and install my phone update WINDOWS PHONE 8 using PC internet connection(via USB)? Please dont suggest WiFI Hotspot creation.

I have a nokia lumia 520 with very poor mobile internet speed.I use a USB stick to connect to internet from PC(Windows 8).How can i use this to connect phone to computer and install the latest updates.

Please dont suggest creating a Virtual WIFI Hotspot.Tried that already for horrible connection speed.

 

HD-10 Miracast

Does anyone experienced fuzzy picture quality using the HD-10 Miracast connecting to a TV? My internet speed is about 25MBS but when using the HD-10 watching Live TV, the picture on the phone is perfect but when it mirrors to the TV, it's horrible. Any
idea why? Thank you.

 

I would say there is no point doing anything until the lines have been checked , wait until they've cleared any issues outside.

Otherwise you could spend hours looking for solutions only for a faulty connection / wire externally to be replaced and it all work fine.

If they check the lines outside and all is fine, then you can look at possible issues internally...