So, I bought displayfusion mainly for the monitor profiles as I have three screens, two for my workstation(Ultrawide near 4k + 1920 monitor) and a 1920 tv, I usually keep the small workstation monitor on with a big clock as I can see simultaneously from both setups, well used to anyways as the clock was powerered by wallpaper engine but having that one while switching to the 4k setup caused my computer to crash 90% of the time. I decided thatm I mainly want the ability to switch main displays over fancy wallpapers and disabled the software. However this is still not a good solution as I still get the bugs when switching to the 4k setup, even though it doesn't crash(as often).

The bugs present as unstable screen flickering, and random flickering green/magenta dotted pixels on the monitor(see attached video). It's a very weird bug because when I press ctrl+alt+delete the screen looks perfectly normal until i drop back into windows.

Things I have tried:
-disabling all other software(teamviewer, chrome, wallpaper engine, steam etc)
-restarting file explorer(restarts taskbar as well)
-restarting video drivers by shortcut(Win + Ctrl + Shift + B)
- disabling most of the options in displayfusion(taskbar, wallpaper etc)

The only thing that works is restarting the pc, but this is quite tedious to do everytime as it of course also closes all my open programs.
(note, flickering and issues only happen on the ultrawide display, but overlayed on every program)

Short summary of my setup:
-windows pro 10.0.18362,
-Ryzen 5 2600X
-16G ram
-Gtx 1070
-C34J79x Ultrawide display

Would apreciate any help on this.

Swap powersupply or graphics card? No, I unfurtunately don't have any spares around. I can try to gather some logs, but lately it's been crashing more while switching. I don't know if it's particularly healthy for my computer but I have just been switching profile, letting it crash, hold powerbutton until shutoff, then turn computer back on with switched profiles. again this only happens when switching to the ultrawide profile.

Don't know if it's related but lately it's like windows times out when switched to the 1920 tv, where I can't use taskbar in any way(I don't have any taskbar function from displayfusion enabled), can't click chrome tabs(still works with ctrl + tab for some reason). Until i hit ctrl+alt+delete, wait for a few seconds then hit escape or task manager to get back to windows, then it works normally again, until it times out again 10-15 minutes later.

I'm kinda upset about it but even with the bugs it's still less annoying than switching monitors manually through windows.

Edit:
I've got a Corsair rm 750x powersupply if that is relevant