spenceteeth

Property environment could be a cause. Rural, Suburban, Multi-dwelling areas react differently underload. If a splitter is damaged, hastily connected, or just may need cleaned and reterminated. I am not familiar with iRacing's requirements but I would double check all hardware and settings on your system. Work backwards like water draining back to gateway. A hard bent ethernet cable, animal chew even sunlight can degrade cabling performance... Coax wallplates do go bad. Isolate gateway from its current power source check for changes. If doing all that you do is on Wi-Fi check for channel interference and crowding. Knowing more variables of your situation could help.

That's awesome! I am pleased a decade of PTSD from daily Death Star front facing customer workloads helped yet again.

Just a query. Is the residential gateway/ modem provided by Spectrum? If so is PC connected directly to that provided modem or passed through either a switch or isp extender device or perhaps a wall jack rj45 ethernet port using inside wire in the walls. Also if straight to router is there a port out of usually 4 or 5 grouped ports that are not of the same color or may even labeled as "1Gbps" some go higher when dealing with fastest speeds. Att and Comcast have equipment that use this Internet speed on PC is largely hardware specific. gpu, cpu, memory, Network interface As a former tech for the Death Star I would bet its the top suggestions. Lasty the PC...but it is more common than you think of coming up shy. 820 on here is good on testmy I wouldn't fret

Your hitting 912 on the max so not bad. Speed tests have a lot of differences regardless. Speed can be effected ninety percent of the time by hardware (This includes home wiring and service drops), the other ten percent would be a mix of environmental interferes (power/noise/emf) and actual service provider interferes. There are also device hardware requirements to achieving higher speed test scores (CPU,GPU, RAM, NIC). For instance to get an extra fifty Mbps I Amazoned a cat 7 coaxial shielded ethernet cable. If that's WIFI that's really good if that's a hardline its ok. I learned in my adventures as a fiber technician the an Apple tv plus hard lined to the correct ethernet port if labeled and any if it wasn't labeled specifically with Ookla speed test would constantly prove to my customers they were in fact getting one Gbps and their device was the limitation. If cable internet replace all the coax components you can wall plates, barrels all line ends and any old line it should have dates on jacket of cabling. Please do not use premade cable sections from install ask the tech to make you some. Premades our high volume low cost coax lines a lot of ISP's offer techs to use that are easily identifiable by the plastic covers on the ends to make them more ergonomic to thread and unthread to wall plate or device. In short that's not a bad speed.

Good Evening.

Possible your ISP and test server for Dallas are one in the same. I run speed tests out of boredom I have seen all kinds of weird things across national and international tests. I wouldn't be concerned

working now. good job Cable

Deathstar employee here. Have you asked for Att to validate address? also try this: https://broadbandmap.fcc.gov/#/