I have an issue where I am losing performance (FPS/smoothness) after having been driving for a short while. I have a very high end computer (11900k 3080 card etc). When I start a scenario I am at 60fps (which is what I limit to), but after about 10 minutes of driving it drops down to around 30-40fps, and by the time I arrive at the destination (30 minutes later in the case of Riesa - Dresden IC service) I am a stuttering mess. If I end the scenario and restart in Dresden I am back at a stable 60fps. I have also tried other routes and have the same issue. Has anyone else noticed this?
LCYCowboy When you say "stuttering mess" and "30-40 FPS", do you mean you are always at that lower framerate. Or it drops periodically for a short time (sub 1sec) to that lower framerate and stutters at that point? For the latter case, there is a long, and very informative thread on this "A Call For Dx12 - Engine.ini Optimizations For Ue V4.26". DTG said on one of the streams they are looking at the issue as part of the optimisation process.
I did wonder about throttling, but after monitoring CPU/GPU temps they don’t seem to be the issue. Also, it will drop from 60fps to 40fps after about 10 minutes, but If you then restart the scenario it goes straight back to 60 and stays there again for 10 minutes before once more dropping. i do play other games for hours (such as flight simulators) which do not do this, so I’m kind of ruling out throttling.
I would be looking at a few things - your config is pretty similar to mine so you should be fine but there are questions What resolution are you trying to run at? What screen percentage are you using? I run 2K with 150% and have no problems (except on Sherman Hill but that is the grass known issue) hopefully you have two monitors to make these next steps easier visit https://www.userbenchmark.com/ and run the benchmark and see what it comes back with (it compares your machine to thousands of similar configurations) and rates yours against them - it will give recommendations if anything is wrong Use a tool like gpu-z to monitor your gpu temp and cpu-z to monitor your cpu temp Use performance manager to look at memory (hopefully lots - I have 32gb), cpu, gpu and disk usage (hopefully you have SSD) If none of those reveal anything go find yourself a tool called furmark benchmark and run that - if it suffers similarly then you have either heat or power related issues for that processor and card you'll need around 800w - the combo is really about 600w but other things chew power so more is better Paul
These days, the PSU has become a very important component. I have had what I consider underpowered systems in the past, which didn't allow me to upgrade. For my latest machine, which is similar to the OP's, I went with a 1000 watt PSU. It may be overkill now, but who knows what cards are round the corner. These high-end CPU's should also be water-cooled.
I'm amazed at the size of some of these cards, I think you can get a functional pc that is smaller than some GPUs! Hope the minaturisation thing starts catching up soon...
I've done some more testing (using HWiNFO64, MSI Afterburner and the Task Manager). My CPU usage never got above 45%, the temps stayed below 50 degrees running at an average of 4,950 MHz and there was no throttling. My GPU ran at about 40-50 degrees, drawing up to 350W for short peaks, but generally at about 150w and with no drop in clockspeed or memory clock. My Power supply is a Seasonic Focus PX 850 850W Modular 80+ Platinum, which should be adequate. I have 32GB of DDR 4 running at 3000 MHz, so that would hopefully also be ok. I started the run at Chemnitz and it was smooth and a constant (limited) 60fps, as I passed Tharandt it started dropping to 40ish, but with no drop in either the CPU or GPU performance. Coming into Dresden I was getting about 25-30fps, with some stutters, again with both CPU/GPU running the same as throughout the rest of the run. Finishing the scenario and then reloading the outbound timetable from Dresden (so that the AI loading stayed the same) I could leave Dresden at a steady 60fps. I don't understand why it suffers entering Dresden, but not leaveing. The same goes for Chemnitz. Nice and easy leaving, but choppy with lower fps driving in at the end of a trip? Thanks for all your suggestions. I will keep trying new things.
LCYCowboy one thing to note, in big yards with a lot of tracks and a lot of signals you will get some performance loss, but dropping from 60 to 25 seems to be too big a drop for your hardware. I am impressed that your GPU sits on 40-50C mine sits around 65-75. Are you water cooling it? Paul
What I can't work out is why the big yards hammer the performance on the way in (after a trip), but on the way out (at the beginning of a new trip) they are fine. It seems like something similar to a memory leak, where after a time something is building up and slowing things down. My GPU is an ASUS TUF gaming OC 3080 (which I waited for a year to arrive) and I just run it at stock. I've never tweaked it in any way. I run 150% screen percentage and only have a 1440p monitor. I just made a 2 hour flight in P3d (in VR) and monitored everything and saw no drop off in performance at any point (apart from the odd unexplained stutter). For some reason TSW seems to lose performance as a train trip goes on. It comes back straight away if you start another trip, but after a while, that then starts degrading as well. I'm stumped!
Which way are the majority of the signals facing? I've noticed when there are a lot of facing signals you get a frame rate drop, but looking at the backs of the signals doesn't have this happen.
