Lifetime Windows user seeking feedback for improvements on my Linux setup

I'm currently running Kubuntu in VMware on a Windows 11 host. I was on Windows 10 but was getting lots of display/graphical issues after pulling my desktop out of storage and I didn't qualify for extended support updates and just felt like I needed to eliminate all driver and software issues by reinstalling OS clean. At that point I figured I might as well go to Win 11, so I used rufus and did a clean install without a Microsoft account.

I feel like I need Windows for gaming, even with Proton compatibility on Linux I still expect I'd have some issues with some games and my desktop is my primary gaming system so I just want something that works. But like many others I don't like the direction Microsoft has gone with Windows so I'd really like to adapt to using Linux otherwise. I considered dual booting but I did have an issue with my system where the motherboard had 30+ second long boot times. Like it had nothing to do with my SSD or OS install, the Asus AM4 TUF x570-Plus motherboard boot time was just excessively long and seems other people reported that as well and there was no UEFI/bios update that fixed it. So I really didn't want to dual boot and wait 30+ seconds switching between OSes, that's just not fluid enough for how I wanted to use them. I really want the Windows install to just be gaming only basically or anything I can't get working in Linux.

So that's how I arrived to running Kubuntu in VMware Workstation Pro. I tried Hyper-V first but had issues and bailed on it. Initially I had audio issues with it in VMware but I found a reddit post that linked to the fix, prior to that, ChatGPT was happy to lead me down rabbit holes to nowhere. I do have a few browser issues with video playback, tried in Vivaldi and Firefox, video and audio are in sync but video is choppy and can't keep up with fast motion. It's otherwise acceptable for basic video playback so it's not really a huge issue for me. I tried playing videos in VLC and did not experience any issues so it is capable of smooth video playback in some circumstances on this setup. I have my own Plex server installed on another system but the Plex Linux application just won't work for me, at best it would produce choppy video if I installed from snap but the flatpak install just won't play anything back properly.

The other thing I couldn't quite resolve but mostly resolved is that in my Win 11 host, I have resolution set at 2560x1440 but I can't get that option in my Kubuntu VM. I currently have it as 2048x1152 which is as close as I can get while keeping 16:9 ratio. It will offer resolution options above my host system but not 16:9. I then stretch this to fill screen and run it in exclusive mode so it's basically like my primary desktop interface, but it would be nice if the resolution was better as I can tell it's slightly stretched, text isn't as crisp as it should be.

I will say, I'm quite impressed with how far Linux has come from when I last tried it as a daily driver 10-15 years ago. I added flathub as part of the app discovery repository so I can get many applications through that. I've had a few that I couldn't, scrcpy was outdated there so I had to follow some command line copy/paste script to install that and Vivaldi wasn't available either. Vivaldi did have a .deb file which I guess works like an .exe in Windows, because I just had to click to install, so that's nice. I still think I had to run something to add Vivaldi to app repository so it would keep it updated if I understand how that worked anyhow.

The Kubuntu VM does seem to destabilize quite a bit over time, it's already locked up on me a couple times, but I think it could be a RAM issue, so I've dedicated 12GB of RAM to it right now (it was at 8GB before). If it continues to happen then I guess that reinforces I'm doing something wrong or need to go in a different direction.

I've noticed my boot times have improved, I don't know when this happened, but now the boot times are about 15-20 seconds (I check the BIOS boot time in Startup tab on Windows task manager, but I've timed it and it matches actual time). Still seems kinda long to me but maybe it's fast enough to dual boot now, not sure.

I guess before I commit to anything too heavily, I was curious if what I'm doing now is not very wise or if there's something better I should try. With my bios boot time where it is now, I'd possibly consider dual booting as then I could probably just set up games that work in Linux. At that point, I wonder if I could/should use SteamOS or stick with Kubuntu or something else? Is SteamOS capable of being used as a daily driver OS or is it better just to use for gaming machines?

Also my PC specs are
Asus AM4 TUF x570-Plus motherboard
AMD Ryzen 5 3600 6-Core Processor
32GB RAM
AMD RX-580 8GB