This is a problem that I only have on my desktop computer (with a GTX1080) and not on my puny laptop (a old laptop video card), which is why I'm so confused by this:

My issue is at random times when I'm playing, it can be 1 minute in or 15-20 minutes in, my FPS plummet and stay around 20-25FPS. I know my computer can handle it, I have a 1080 and the FPS initially is in the high 170s, and even changing and testing out as many settings as i can find I cannot figure out whats causing this. If anyone else has experienced this and possibly has some answers it would be awesome thanks!

Same here.

Jojo_Fr wrote:

Same here.

I just possibly found a solution, I just don't have much time to test it at the moment. It might be G-sync that my monitor has that's apparently causing this problem. When I have the time to test this I will, do you also have a G-sync monitor?

No I dont have a G-sync monitor.

If you find any solution and if you have the time, please writte it here.  :)

they released a beta yesterday that solved this issue for me. I only had it during the dust eclipse though so...

anyhow here is what they said :

"Hi again! I have uploaded 1.7.2 on a test branch. Please could you give a look at it? The password is : DustEclipse12 (Endless Legend's properties, Beta tab). It should work with your 1.7.1 auto save files. "

I hope it helps!

Turning off the GSYNC on my monitor has solved my problem, hopefully the other persons suggestion here can help you.

Could you let us know if the issues have been solved with version 1.7.2?

Looks like there might be two threads for the same issue. I've been following this one:  https://www.games2gether.com/endless-legend/forums/13-tech-support/threads/32914-i-observe-a-drop-in-my-framerate-since-symbiosis

No change for me on 1.7.2 S3 (I don't know if S3 indicates anything....)

I tend to get big frame rate drops late in the game during both winter and eclipses. 

It would be helpful, if people that have stuttering issues at random points of the game would post a savegame, so we can see if its an universal issue (pathfinding) or something specific to that machine.

I've been getting this problem. It started somewhere in the last five turns or so. 

Here is my save.Ardent Mages - Turn 92.sav

Here's another one: Cultists - Turn 129.sav (ELCP game)

The last few turns of this game were extremely slow, with even the menus becoming sluggish, and it got even worse during Winter or Dust Eclipses.

I'm not sure if it's the pathfinding or just the sheer number of armies that the AIs had running around, see screenshot from ~15 turns before (and the Necros had probably more than all the other players combined)

I had a look at both of your savegames. Slashman's is a good example for what I meant. One of the AI's (teal) desperatly wants to explore a region it cant reach due to closed borders, which leads to regular stuttering due to mass pathfinding requests. If you (Slashman) are not interested in multiplayer, I can send you a beta where this specific instance of stuttering is fixed (there are probably more, I need to adress them all one by one).

Wendeks save on the other hand is not relevant for vanilla play, the stuttering here is indeed just caused by the sheer numbers of units produced by a snowballing lategame necro AI. Thats a problem ELCP players probably have to deal with sadly :/ (vanilla AI never gets near this many units).

Thanks LEaderEnemyBoss. I will take that file as I am not interested in multiplayer!

@KnsCtyShufl

In your game two things are a major source for bad performance as far as I can see:

The huge number of fungal blooms leads to noticable performance degradation. Its possible that this is exascerbated due to most of them being in construction at the moment. Clicking on any individual bloom/city takes ages to open the city interface. Maybe it would have been better for the fungal bloom interface to be similar to other garrisons (fortresses, villages etc.) so that only a single interface fore each bloom gets displayed. Would be not as nice to control, but would also be less resource intensive.

Then there is your Urkan which is using Tremor Siege. This ability (maybe because of the Animations) seems to tank the framerate alot. Maybe you should deactivate when you do your turns, and only activate it on the end of each turn. As soon as I deactivate Tremor Siege performance is way better, and even more so if I switch to the last remaining enemy AI. 

Lets hope NGD can improve the performance of both the bloom interface and the Tremor skill, since both are new DLC features.

Okay weird, I tried using the Urkan for a "normal" melee range siege, and the stuttering also appeared. ev en when one of the other armies initiated the siege, it stutters, but only as long as the Urkan is part of the siege. So its not the Tremor animation, its more of a general problem with urkans sieging (but maybe only occurs if they have tremors?)

My performance is waaaay better. Thanks for the beta file LeaderEnemyBoss. If it drops again I'll let you know.

Some persons are reporting this performance problem (including me) from Symbiosis :

https://steamcommunity.com/app/289130/discussions/0/1779388938818124446/