Vulkan consistently launches into 'Lag Mode' after about an hour of gameplay (duplicate of Serious Sam Fusion 2017 bug)

[FrostedSaber]

After about an hour and five minutes of playing, the game launches into a 'laggy mode,' where it feels like it's running at about 10 fps. However, the fps counter displays the frame rate as normal (80 to 120 fps).

This exact same thing happens with the first two games in Serious Sam Fusion 2017 (flat), and I had made a thread about it here.

The issue does not go away on its own. To make it stop, I temporarily switch to OpenGL and then back to Vulkan. It also works to restart the game.

In SSHD:TFE and TSE Fusion 2017, this issue reliably occurs after anywhere from 20 minutes to one hour or more of gameplay. With Talos, it occurred consistently today after about an hour and five minutes each time. But I only tested for it twice.

Like Sam Fusion, I believe this issue is not new for Talos, but has always been there. I just never played a long enough session with Vulkan to run into it. It only dawned on me this morning to test for it.

As someone posited on the Serious Sam Fusion 2017 forum, the issue kind of seems like some sort of memory leak that accumulates over time. It happens at random, and doesn't seem to be triggered by anything, such as an event or an overload of information. You can be standing still in a peaceful place and it will just kick in sooner or later.

Here is my Talos.log file: https://pastebin.com/xLJdfBfU

The 'lag mode' occurred twice during my session this morning; the first at about 7:54 a.m., the second at about 9:02 a.m. I did the switch-to-OpenGL fix within about a minute or two after each instance.

Let me know if there's anything else I can provide or test for.

(Otherwise, Vulkan runs awesomely for me -- no bugs, glitches, artifacts, missing textures or stuttering. And frame rate is greatly improved over OpenGL. Great job!)

System information:
Linux Ubuntu 14.04.5
M4A78LT-M LE Motherboard
AMD Athlon II X4 645, 3.10 GHz Processor
Mushkin Blackline 8GB (2 x 4GB) RAM
Western Digital 500GB Hard Disk Drive
Nvidia GeForce GTX 750 Ti 2GB GDDR5 Graphics Card
Nvidia 375.39 Driver Version

Settings:
-Not opted into the Steam Client Beta
-Steam Overlay turned off for this game
-Opted into The Talos Principle [publicbeta]
-Using Vulkan (Beta) API
-Fullscreen mode
-V-Sync off
-1920 x 1080 resolution
-Max 3D Rendering MPIX 1.1 720p

[FrostedSaber]

Hi Croteam, Just wanted to make sure this thread got your attention amidst all of the other threads over the Easter weekend. Still really want to help improve Vulkan!

[THE DEATH]

Solution: get more RAM.

I had similar problem with Shadow Mordor, with 8GB RAM.
For that i upgrade to 32GB RAM, and this never happen again.

The game was eating my RAM little after little, and after like 1-3 hours of play, RAM was filled 100%, and then game will run more and more slow, until i get 1 FPS per 10sec and finally freeze.

Also some games can run unstable with CPU's with low Cache.
You'r Nvidia Card seems to be have low VRAM too. I think, you need at least 3GB or more.
Also i experienced with low Frame-rate with Not good enough MB. After upgrade only MB, games run far far well.

[AlenL]

Have you tried disabling world streaming?

[FrostedSaber]

Originally posted by AlenL:

Have you tried disabling world streaming?

I tried looking for World Streaming among the settings but wasn't able to find it. Can you please tell me where to locate it?

[AlenL]

Sorry for being unclear. It' at: Options>Performance>Level Caching. Set it to None to be sure it is not taking extra memory in the background. Higher settings may preload and in trurn accumulate a lot of assets in background in order to keep loading times to minimum.

[FrostedSaber]

Originally posted by AlenL:

Sorry for being unclear. It' at: Options>Performance>Level Caching. Set it to None to be sure it is not taking extra memory in the background.

Hi Alen, I had the time just now to try playing with Level Caching set to None, but the problem still occurred. The only difference is that it seemed to occur later than usual--about 30 minutes to one hour later (I tested it twice). It could be related to Level Caching or just coincidence.

[Dragunov]

Have the same problem, only with the Vulkan API, not wit the other API (DirectX and such)

[☺rEZ☺]

Originally posted by AlenL:

Sorry for being unclear. It' at: Options>Performance>Level Caching. Set it to None to be sure it is not taking extra memory in the background. Higher settings may preload and in trurn accumulate a lot of assets in background in order to keep loading times to minimum.

Hi great game but .... experiencing these issues on Win10 - never had it before when playing . Currently running:

Win10 1803 latest patches
RX580 8gb
AMD drivers: 19.1.2
Vulkan driver ver: 2.0.68
Vulkan API ver: 1.1.96
FX8350 8C/8T 4.2ghz
16gb dd3 1866mhz
SSD
Temps: all within very safe ranges, great cooling, system fully stable during heavy stress tests

Tried different settings but the game isn't playing nice anymore:

- tried switching between windowed / borderless / fullscreen

- tried vsync force via catalyst control panel

- tried createing profile for game specifically to ensure settings enforced

- tried running different versions of the game and no change

- tried resetting performance settings to allow game to autodetect and no change

- Game mode Win10 on/off not making a difference

- check other vulkan games - nope Doom and Wolfenstein II have no issues at all


Things I will try:

- checking if vulkan shader cache somewhere I can delete somewhere?

- remove all vulkan drivers and reinstall?

HELP!