[GS] Lag/flicker on system that shouldn't see lag/flicker

fandan

Chieftain
Joined
Mar 11, 2019
Messages
4
I'm seeing unit lag and screen flicker in games regardless of map size, number of civs, barbarian activity, graphics settings, etc. I've played (or initiated and quit after lag/flicker appears) at least 20 games now on Duel-sized maps with 1 AI Civ, no CSes, and no barbarians in Strategy View to attempt to diagnose and/or resolve this. The issue will *always* occur, the timing depends on the starting era.

On my system (hardware):
  • My current setup is a 2700X, 1070 (8GB), 16 GB RAM, SSD, Win10. The hardware is solid so far as I can tell through freeware benchmarking (e.g. userbenchmark, Heaven 4.0).
  • FYI I played Vanilla a lot on release with the same system other than a i5-3570k with 8 GB RAM. That played very nicely, even with very large maps and 1440p. Late game lag only due to AI.

On my install/drivers (software):
  • I've verified installation files in Steam. They're fine.
  • I've uninstalled, then restarted, then reinstalled twice. No help.
  • I've disabled the 4 mods I use (all QoL UI stuff, all well known and maintained). No help.
  • I've booted to Safe Mode and used a tool to completely remove my graphics drivers, then reinstalled driver. No help.

On Civ6 specific benchmarks:
  • Vanilla AI benchmark is ~6.5s per turn.
  • GS AI benchmark is ~33.0s per turn.

Is there anything I can do to further diagnose and resolve this? I'm losing my mind. It's difficult to be specific about the issue(s) other than to describe symptoms: there's screen flicker, and there's lag in moving from one unit to the next. I have vsync off, so I'll go from seeing something like 400 fps (according to the steam overlay indicator) to seeing 20 fps then 1 fps as I move to a unit, then freeze and boom. Aside from the flicker it's very similar to the typical late-game AI slowdown you'd see on any Standard or larger map.

Anecdotally I feel like it may have something to do with Worker units? It's hard to say, though, because usually in these test games there's not a lot of units out there, so it's possible that's a false impression.

What's especially frustrating is that one of the things I had really enjoyed about Vanilla was Strategy View, I was able to turn sliders way down and just enjoy big maps and big games without too big of a performance hit. To return to GS and have that taken away is a real gut punch. I was looking forward to exploring the new game mechanics and civs, but it's hard to do that when the game's slogging in Strategy View on a Duel Map by T70 (for an Ancient Start).

EDIT: This is happening in both DX11 and DX12. 90% of my testing has been with DX11.
 
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