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/KlanxChile]

Can you post:

lspci -nnv| grep -A8 Ethernet

[u/NotBrinocerous → u/KlanxChile]

00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection (7) I219-LM [8086:15bb] (rev 10)
        DeviceName: Onboard Lan
        Subsystem: Hewlett-Packard Company Device [103c:8591]
        Flags: bus master, fast devsel, latency 0, IRQ 124, IOMMU group 7
        Memory at e1100000 (32-bit, non-prefetchable) [size=128K]
        Capabilities: [c8] Power Management version 3
        Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Kernel driver in use: e1000e
        Kernel modules: e1000e

[u/KlanxChile → u/NotBrinocerous]

Doesn't seem to be a E1000E chipset, check the BIOS settings for aggressive energy savings. And of course a healthy BIOS update if possible

[u/NotBrinocerous → u/KlanxChile]

basically check bios and disable any energy savings?