30-40 second boot time on SSD - can't seem to lower it no matter what

Windows Version: 20H2 (19042.1110)

So for the past few months now I've been trying to tackle this issue where my startup time is rather slow for an SSD. The BIOS time in task manager reports anywhere from 30-40 seconds. I can't seem to get it lowered no matter what I try. The results are basically the same regardless of whether or not fast startup is enabled. My install type is UEFI, and not CSM. Secure boot is enabled.

I've tried the usual: disabling services, turning off startup items, updating drivers, uninstalling unused programs, setting power to "Ultimate Performance" plan, disabling GUI boot, disabling unused devices/ports in device manager, running sfc and DISM, disabling optional features, etc... but it doesn't seem to be helping much at all. I'm at my wit's end and I'm not sure what else I could try. I would rather avoid a clean reinstall as much as possible, since doing so would take me hours to get things I need set back up, and seeing as Windows 11 is just months away, I would rather not reinstall 10 only to potentially upgrade right afterwards.

I did run a boot trace just now, but I'm not sure what exactly to be looking for or how to navigate it in the performance analyzer. There's simply too many graphs and data for me to know what to look at. Here's a link to it if anyone can figure out what's causing it to take so long - WeTransfer

Thanks in advance! If there's any required information I missed, please let me know and I'll try to provide it if possible.

Windows Boot Performance Diagnostics tool can be used to detect Windows Boot Performance problems and attempt to determine their root causes.

Troubleshoot Windows Boot Problems with Windows Boot Performance Diagnostics Tool | Windows Questions

FreeBooter said:

Windows Boot Performance Diagnostics tool can be used to detect Windows Boot Performance problems and attempt to determine their root causes.

Troubleshoot Windows Boot Problems with Windows Boot Performance Diagnostics Tool | Windows Questions

This doesn't seem to be helping much either. It was already enabled for me apparently, so I looked in the event viewer logs, a few programs were reporting as slowing the startup process, so I tried using a tool to delay their startup by a certain amount of time. While this made the process of starting up feel smoother and not as laggy, the issue of the start time being quite long is still present.

Steve C said:

Ensure only your system drive has an active partition to boot Windows and other drives have partitions set to inactive. You can use Minitool Partition Wizard to do this. Having multiple active partitions can slow the boot process.

I just tried doing this via cmd/diskpart. Every other drive and its partitions are not fixed MBR disks, therefore they cannot be marked as inactive.

Steve C said:

I would check the inactive status using MiniTool Partition Wizard. I once had an active partition on an external USB drive which slowed the boot - fixed by using MTPW to set it inactive.

This tool doesn't let me do it either. The option to make any partition inactive is greyed out. Whatever diskpart was telling me was correct. All my drives are GPT, not MBR.