Get 90% isopropyl alchol. Drench cotton swabs in them. Push them against the switches to make it seep into them. Keep mashing your keys to loosen them. It evaporates really quickly.

I spilled tea with honey over a keyboard years ago, doing this fixed that same issue for me.

Control Panel > Power Options > Change Plan Settings > Change Advanced Power Settings > Processor power management > Maximum processor state

and

[…] Change Advance Power Settings > PCI Express > Link State Power Management?

What kind of background software are you running?

What exactly have you used to clean it?

Next time it happens, take a screenshot.

Start by installing MSI afterburner, look at temperatures on your CPU and GPU, as well as the load on your CPU, not just the overall temp/use, but also per core.

Any 2.5" SATA SSD, any 2280 PCIe 3.0 NVMe SSD will work.

This is a longshot, but go into your BIOS and look for a setting called “UEFI legacy mode” or something along those lines, and disable it if it’s enabled.

It’s possible your CPU cooler loosened contact a bit during the move, without fully coming loose. To prevent itself from overheating, chips will limit their clockspeed, as higher clockspeed means higher power draw, and so more heat production.

What background software are you running? I was having a similar issue for ages, until I finally discovered a specific piece of software was responsible.

Are you using VLC media player? It has an option to select the audio output device in there, it might still be set to another output device. If not VLC, check if that software has a similar feature.

My guess is that you’re simply putting too much load onto the hub, with you connecting 10 fans on it when it only has the 3 PWM headers.

You can use system memory to compensate for the lack of VRAM yes, but you will not be able to play smoothly without it affecting performance. As your game will keep swapping assets between VRAM and system memory, as well as the fact that system memory has significantly less memory bandwidth.

The best thing to do on any platform upgrade is to do a full fresh install of Windows. Having your old drivers installed while installing the new ones can lead to your PC completely freezing up.

This is a longshot, but in your BIOS see if PCIe speed for the top is set to auto or 5.0, and if it is, set it to 4.0.

What exact PSU do you have? From my limited experience, it sounds like a PSU issue.