High Sierra Quick Look Slow

Will do this weekend. But potentially seem like a potential hardware problem. When the issue pop-ups, sometimes can occur just after waking from sleep, which I always found weird if is something to do with software.

I am currently plugged into a Belkin Hub, which then connects to a external monitor. When the hang up starts to happen, if I unplug the hub from my laptop, my laptop doesn't immediately switch to single screen. It hangs for a bit. After letting it sit, putting it to sleep, etc, it recognizes finally that it is no longer connected to a 2nd monitor. After this happens, my finder/quick look is working normal again. I'm not use to hardware causing hangs, but anyone experience this? Above leaves me to believe it has something to do with the hub, but guess it could always have to do with laptop port potentially?

So no luck here, froze again the other day. The strange thing to me is if I unplug my Belkin hub, after the machine registers that it's not connected, seems to work again. Or works on a restart, which to me points to more software issue.

Hard to test that. As it just stops working after a few days. Nothing that I can tell specific with any application that causes it. If i restart the computer works again. When it is not working, also any finder restarts, qlmanage cache resets don't fix it as well. Same with when I run qlook in termainl, no real error messages to know what it is freezing the machine.

You're asking to paste this info when it is working or when it is not working?

Here you go:

https://pastebin.com/SZSTBDfs

I don't.

A/C powered. Plugged in is a monitor, external sound card, an an external hard drive.