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Yeah, probably a good point.

CPU: Core i7 7700K
GPU: MSI GeForce 1080Ti Gaming X 11gb
RAM: 32gb (4x8gb) Corsair Vengeance DDR4
Running Rimworld from a Samsung 960 EVO NVME 500gb SSD on Win10 Home

Sorry, should've mentioned that! All tests above done on x64 versions. Given that the x86 version is basically relegated to 32-bit systems (and that it worked on the latest version without issue) I didn't bother testing it.

Okay, so I've done some further testing (again).

Using the steamdb manifest information and steam's depot download function through the console, I downloaded several previous versions of the 1.0 release:

Version 1.0.2096 (November 23, 2018, Manifest ID 2990835901037261399) - No Spike
Version 1.0.2150 (January 20, 2019, Manifest ID 4677681625388671945) - No Spike
Version 1.0.2231 (April 7, 2019, Manifest ID 3518976739099334473) - No Spike

These three were run completely vanilla and no lag or spikes occurred. I purposefully spawned in several different events including a number of raids per colony.

The versions following this, however, did spike.

... It would be amazing if you could actually tell me how many milliseconds the spikes are on each version...

While measuring the exactly millisecond would be difficult (unless you know some easy way for me to do this?), I can confirm that on all versions I've tested so far that have spiked, it's been 1/4 of a second. This is true of both modded and vanilla, the spike duration doesn't change.

I believe I've exhausted all possible testing abilities for myself here, unless anyone has any further ideas. Hopefully this will shed some light.

A small amount of further testing: The 32-bit (x86) version of the game also runs without issue, zero spikes.

Oh, I was talking about a new game situation as in some videos that were posted earlier.

How old is your colony? How many colonists? How much wealth? Which mods are you using of any kind?

What you're describing doen't sound like GC spikes. If the system is under low memory pressure it'll create tiny GC spikes (not perceptible) every 20-30s. If it's under high pressure it'll make big spikes every 5-10s. It's hard to see  a case where it'll make big spikes every 60s.

Ah, my apologies in that case. I'm also talking about a new game situation. As far as a vanilla/no mods run is concerned, this is from the very beginning. Immediate lag spikes beginning within the first minute of the colonists (3) landing and happening every 30-45 seconds forever. Minimum wealth, whatever the original three colonist scenario starts you with. It's exacerbated by time acceleration, exponentially.

On a modded run of 3-5 colonists it begins immediately and happens every 5-10 seconds, perhaps more frequently.

In both scenarios, even when no orders have been given and the game is left to sit, it still occurs.

Edit: I've also now run this on a 2017 Macbook pro running 10.14.6 Mojave (arguably not the best hardware to run anything on) completely vanilla and the same issues occur. I don't believe it to be an OS or purely windows based problem.

Edit #2: I reverted to B19 just out of curiosity and it runs flawlessly. So it would seem like something between B19 and 1.0 release, although you likely already know that.

There will be small GC spikes in every version of the game, because they're inherent to C# and Unity. They should be small enough not to be perceptible without tools, but if you're using tools you'll always see them.

This simply isn't the case, though. At least for me, they're consistent and extremely noticeable. I can't pan the camera without a spike causing it to fly off in a random direction as the game is still taking the camera movement input during the spike. This happens at least once a minute on a purely vanilla save.

Edit: This can also be seen in recent, albeit modded, youtube let's plays as well as the videos linked earlier in this thread.

Fresh, up-to-date install of Win 10 complete but the same problem persists. I'll be testing on a windows 8 install later to see if it exists there too.

Spawning the raid made no difference for me, sadly. Still hanging on GC processing.

*snip*

I'm curious if you were to do the same thing and let the game take its dump then load a previous save, would it be running smoothly still? My assumption would be yes, since it's still the same instance running, thus it would continue to run as it should. I might do some testing myself later today and see what happens.

Who is using Win10 here - pre 1809 version please if anyone?

Windows 10 here, but currently on the 1809 version.

Another one reporting in.

1080ti here, stutters on both vanilla and modded. Obviously more severe with modded, but still extremely frustrating with vanilla.