When you said works fine away from home...

Had to replace my router when tv did the same...

My router is a Linksys router and it’s about three years old. Every other device using my router is fine. I suppose it could be a router issue as I generally funnel more data and traffic through my PC than my laptop or other devices. I might investigate replacing it.

That's one of those tough ones. Been there.

Does your CPU have the rating and number of cores for the kinds of games you play? Have you contacted the video card manufacturer or visited their forums to ask/find out?

All I can do is share what comes to mind and it could be way off base. Maybe you have tried them.

Run task manager and just make sure you don't have a huge list of processes running, if you see hundreds, then something is wrong. You can look up optimal settings for Windows that turn off unused processes and that might help. You said Win 10, but you didn't mention if it was Pro, which might be using processes you don't require. That can be looked up: Win 10 optimization.

Do try using a deep malware checker, if you can.

Also, what comes to mind is to check if you have automatic defragging turned on under the disk options. Turn that off.

I don't know if it still applies, (have not done gaming in a while) but are you using the Windows drivers for the video card and is there a dedicated one available from the manufacture? Updated drivers can often resolve glitches.

Also, have you updated your Wi-fi drivers using the manufactures version? Even though you tested the problem with a direct, Ethernet connection. Sometimes the drivers are from the same manufacture.

That's all I can think of off hand. They might all be wrong. You know how it goes.

Thank you for the suggestions.

Yes, Pro may have system settings and processes that are not necessary for your needs

The game issue aside, there are tweaks for that online and your machine may be more spry afterwards. So, you can look that up to find out.

You can also get an app to check and change your Windows TCP/IP settings for modem/wi-fi with TCP optimizer. It remembers the original ones if you are experimenting and you can get tips online for the settings.

I use it on a new system to tweak.

Laptop versions of the Alienware R17. One is 3D and one is UHD.

When I have that problem, I can usually trace it back to Dell's latest updates. If I revert to the last updates from Dell, usually, the problem solves itself. The only problem from that point is that when I have to do a reboot, Dell does it again. They update the firmware again and the problem comes back. I remember telling Dell Update to not do that one certain update at some point and it seems to have cleared itself up.

Also, sometimes GeFroce will have an update and not tell you to restart. Or it will have an update, that update will fail, and your video will go crazy. Most of the time, what I do then is reboot first, then check GeForce Experience (you can download it from them) for updates.

Also, there are settings in GeForce Experience where you can check, game by game, to see what would optimize play of that game. Sometimes, something as simple as turning off anti-aliasing can fix framerate issues.

With latency/buffering issues, I'm not sure. That might be game specific from their servers. It might not hurt to go check the specific game's site for info for that. Each one has it's own instructions on how to deal with those kinds of issues.

I had a lot of trouble with Twitch until I changed the latency settings. There is almost always some setting somewhere in a game, a web site, or a browser that will fix the problem. Finding what to tweak is usually the hardest part.

To make it go slightly easier, I would reboot first, then go to GeForce Experience and let it update your drivers for GeForce. After that, use GeForce Experience and let it optimize your games. If it cannot find a game, sometimes you can use the other GeForce control panel (I can't remember what that one is called) to go program by program and find the game there.

I hate it when these are the Cadillacs of the computer world but they have simple problems that mess everything up. Both Alienware laptops I have both have had the same problem with the same USB ports on the left hand side being loose. I got one fixed. I need to fix this one before it runs out of warranty. I think this is the last year I can have the nicer warranty. I need to get on the ball and have that fixed. Or I could just do it for less than a year of warranty costs and have them fix it out of warranty, which might be another option.

I think I've read it's pretty buggy/crappy network-wise.

Have you tried the simplest things, like running chkdsk and sfc /scannow? Checked the HD's S.M.A.R.T. status? Is anything hogging cycles in task manager?

If you're only having an issue in Chrome not FF or Edge that sorta rules out hardware issues tbh.

Usually when I get fed up with issues like this I just freaking reinstall windows (after making very sure the HD is working okay). Other than laptops I've never bought a PC that I didn't build and install Windows and everything else myself (other than laptops and even those I've reinstalled Windows myself).