A great many of us have seen issues with game performance. Rubber banding, stuttering, stalling when using fast travel, and inputs that seem delayed. I used to see all of these — and a few more. However, throughout it all I maintained a very good frame rate. The computer I was using I had built back in 2016. At the time it was state of the art. Since that time I had upgraded the graphics card a couple of times and now have an Nvidia RTX 4070 but I it still had an i7 6700k cpu and a fairly new 6TB hard drive for games. Last week I finally finished building my new PC. Note it took me a number of months to get it done (at 75 I can’t sit at my work bench for much more than an hour at a time.) I now sport a Lian Li case (those suckers are heavy), 32GB of DDR5, an MSI Z790 Carbon WiFi MB, my RTX 4070, an i7 13700k CPU, and 9TB of SSD storage. I now have no trouble logging on, using fast travel, no rubber banding, no stuttering, or any other performance issues. I was somewhat surprised at the difference as I was able to play other games that seemed far more graphically intensive without those problems on my old PC. I hope this my shed some light on the issues.
Would chalk it up to luck for the moment. Most people reporting issues on here have fairly beefy rigs with 4070 or greater cards. It seems to be the only common denominator for people that have issues.
I run with a 3060 myself and don’t have any issues within the game, nor have I had any since launch for the most part. I’ve had maybe a handful of crashes since launch, but that’s about it.
It’s great you aren’t having issues though. However possibly upgrading, or downgrading, one’s system isn’t the issue with the game. Devs have already stated they know of the issues and are actively trying to fix them.
This game is horribly done!
I have 4090 + Intel 6 5.5 Ghz + 64 Giga RAM and I never saw such consumes resources like Diablo 4!
From other side PoE2 looks much better (with everything) and make much less stress for my computer.
9950X
4090
64GB ram
No issues here. Max settings across the board… 4K 60 fps.
By Mephisto! At 75, arent you experiencing more severe issues with your fps in real life? Gotta call Musk and upgrade that hardware. ^^
I have one of those beefy systems. intel 13900k, 64gb ddr5, rtx 4080. I did not have any issues until the second or third patch after the expansion went live. After a few VM tweaks and rolling back the video driver it was stable again. Has to be on their side as I had to get a bit extreme with the VM.
The biggest issue is when I would CTD I could immediately log back in. This tells me I was dropped server side not client side. If your client suddenly drops it takes several minutes for your login to time out. During this time it will not let you log in. A bad driver or configuration won’t randomly send a logout command to the server. Seems like early in the season when the servers were getting at max logins they would boot off players that have been logged in over a certain time to allow newer logins. Just my 2 cents as a software engineer.
It happens to everyone. I am happy I can still play Diablo 4 fairly well. Now if I could just get some mythics to drop or failing in that two more EOM runes. 
I’ve been trying using a memory utility. WiseMemoryOptimizer is the one I have but there are dozens of them. I had for some other game awhile back that would kill your memory like D4. It seems to be helping but I have played that much since I remembered having the thing.
For as much as we paid they seem to not want to fix the bug of constantly getting booted off. I had less problems with Diablo 3 than 4. I could be inthe middle of anything or just standing there and get booted and have to reload into the game. I have done every type of system check on my end and it happens both with my husbands computer and my gaming laptop. Not sure why the downgrade in play from just even Diablo 3 even.