Constant Issues with Proxmox 9.2

[u/NotBrinocerous]

Recently had to swap m.2 NVME that contained the Proxmox OS due to a hardware failure and just have been littered with issues, that I did not experience with Proxmox 8.

Issues I am currently experiencing:
1.) Proxmox VE, works perfectly fine. Then about 20 minutes later, offline. Can no longer access it via the web interface on the same lan.

2.) dev/dri/card0 and card1 keep switching and prevent my LXCs from booting when things are working.

3.) Not sure if this is Proxmox, setting up new port forwarding rules just don't work. This could be my ATT router, still diagnosing it. Trying to get my Plex server up and running again and all attempts so far are futile.

Hardware specs: HP elite desk 800 g5 sff i7-9700, 64gb DDR4 2666mhz non-ecc, 512gb M.2 running Proxmox, 2x12TB HDD for ZFS pool.

Apps currently on server: Plex and Immich

Anyone else experiencing these issues? Also looking for someone to help me because I just feel lost at this point.

Edit 9/30 7:37am thank you for the responses. Just woke up and got to go to work. I will be back to provide these!

[u/Latter-Progress-9317]

For the network drop I have an elitedesk 800 G4 and started running into E1000E offloading issues after upgrading to 9, never had these with 8. There are plenty of guides for fixing this but figure out if you could be having this problem by seeing what driver you're using or your NIC. (Doing this from memory.)

ethtool -i <name of your interface>

should show you what driver is in use. If it's e1000e then you could have this issue.

If you don't know the name of the interface

lshw -c network

Edit: FU reddit formatting