Lots of testing behind this issue, but very little concrete ability to say what's causing it, other than I'm 99.9% certain it's Xavorion.

I have a ~100 hour game save, where the last 30 or so hours have seen very frustrating mining and salvaging using fighters. When the fighters "break" an object which then spawns a resource floating in space, they go to "collect" it, at which point the game utterly freezes (10+ seconds is typical). The game then unfreezes, and the rendering on-screen plays catch up. It's a bit like the render engine stopped after the collection attempt.

I have very few mods other than Xavorion installed, and to test whether it was a conflict I decided to try two scenarios: one where I ripped out all the non-Xavorion mods, loaded and tested the same save. And another scenario where I ripped out Xavorion and left in all the other mods.

Using the two above scenarios, the problem persisted with *just* Xavorion installed. But the test with Xavorion pulled out didn't have the issue. Again - this was applied to the 100 hour save I have where I can replicate the issue reliably.

As a reference - I turn on frame times and always have ~60 FPS with a typical 6-7ms frametime, so it's not an issue with the game's ability to render frames. Likewise it has nothing to do with video settings, resolution, etc - I've tried dozens of different configs with no resolution there. The rig is an i7-6700k running at 4.5ghz, either 4c (physical) or 8c (logical), neither makes any difference - the game never consumes more than 60% on a single core, 30% on all the others.

I run almost all the Xavorion mods (and recommended mods) in this 100 hour save. I've tried temporarily turning off a few (like flight physics), which didn't help. The only thing that really solved the issue for the save was removing Xavorion entirely.

I've checked the log files, and didn't see anything that explicitly called out the freezing. But it does appear to be a game engine/mod logic issue, since the GPU drops to 0% utilization when the freezes occur, meaning the game isn't even requesting new frames be generated while it's frozen. And it's not a GPU or driver issue - as indicated the problem goes away when Xavorion does.

I wanted to verify the issue is 101% reliably gone when removing Xavorion, so I went and re-tested the non-XR save and mod config another ~6 times in different sectors, loaded multiple times from the Desktop. The freezing is gone if I disable Xavorion.

I'm at a bit of a loss, but I wanted to report this either way. It makes the game virtually unplayable for me, and with 100 hours dumped into the save I'm not sure if I want to continue with it unless you have any good ideas as to where it might be coming from. I have of course, done a web search rather exhaustively, and none of the suggestions out there worked while Xavorion was installed.