Where do my portals go when an instance crashes?

So this league I've had an unprecedented amount of maps and other stuff lost because the game decides I'm having too much fun and just sends me to the login screen taking all my portals.

How do I tell where the problem lies and is it even possible to do anything about it? My best gateway to play on is Moscow, but I lose a good chunk of maps when I try to play there.

Playing on other gateways results in extremely unstable ping, however I haven't experienced a single instance crash there yet.

Speaking of instances with unstable ping, here's WINMTR data for one of those, Paris if I'm not misaken (same happens to me on every EU gateway): https://pastebin.com/sY1szECh

Here is footage of what happens on EU gateways in most of instances, I WinMTRed the same instance in the video after completing the map.

https://youtu.be/vOm4iS279OY?si=LmqmEhhKEoaaLp6q

After making the post I did some steps from general troubleshooting guide, deleting cache etc. I also tried switching to predictive before switching to Moscow.

For an hour or two I was able to play with no issues until this happened: https://youtu.be/yIvqW_INCKs?si=068L70DlaiXWebYm

I will reiterate my question: What exactly happens to my instances? Am I zooming to quickly through maps or do too much damage(lol)? Where am I, or anyone experiencing the same issues, supposed to go to play the game? Are maps and boss instances also stored on my ISP's property so I should ask them about it?

MapS lost, scarabS lost, multiple time today.

That's just annoying as fuck, especially without any sort of communication or acknowledgement of anything.