This game is a technical mess. Oblivion is top 3 of all time for me. I'm the target audience for a litany of reasons, yet I refunded it after 3 hours.
It runs like shit on everything. Windows? Check. Linux? Check. Steam Deck? Check. GeforceNow? Check.
As soon as you leave the prison it all falls apart. Hopefully the next few months of patching can salvage it. I'll keep an eye on reports. Until then though, the console versions seem to be the only way it's worth trying to run this release.
Specs for anyone interested:
PC running Win 11 23h2 and PopOS - Ryzen 5900x, 5080FE
Laptop Running 24h2 and Mint Ryzen 7945HX, 4080
Both of those should be able to run this game at 240 1080p, 120 2k or 60 4k and unfortunately none of that happens. Its just a see saw of random drops and stutters not matter what settings I use.