FPS loss with radar range at 60km

Hey everyone,

I was away from DCS since before the radar update, and since then I found that sometimes (especially at low altitude) performance decreases significantly when radar range is set at 60 km. Any other range, including 120, is fine. Is anyone else seeing this?

Odd! We'll check.

Hi !

My friend and I observed the same FPS loss some times, active or passive radar.

I will check if it's related to 60km too.

Open beta

Odd! We'll check.

More detail: I've only been able to reproduce this flying at low altitude in the rocket attack quick mission. Other missions seem to be fine.

HUGE fps loss while gaming on my rig in 6060x1080.

I don't get quite the same effect in 1920x1080 or VR but certainly noticeable.

But certainly something's really using up them cycles in the new radar model.

In my case it's made me use the new radar even less than the old. Yes, it is *that* bad.

To OP: thanks for bringing this one up.

Here's a more telling post.

Tests done in Active Pause, mission is the the start of the HB Instant Action mission Rocket attack. Fraps used.

1.

Radar A0, capped at 60 fps

2.

Radar A1 15 km, capped at 60 fps

3.

Radar A1 120 km, 15-25 fps

4.

Radar A2 15 km, capped at 60 fps

5.

Radar A2 120 km, 15-25 fps

Note: the area seen in example 4 and 5 is the same (at the waypoint)!

6.

Radar A1 120 km, external view, 20-30 fps - slightly better fps outside the cockpit, which is generally expected. But yes, the radar affects fps even when the CI isn't shown on-screen.

Same problem for me...

From Readme for 2.5.4

Improved performance during radar usage at long range

We shall test :)

Tested today in the latest open beta, just sitting on the ground i get ~50fps in the radar ranges 15/30/120 but only half the fps ~23 in the radar range 60. You can also see a drop in fps in the air but there it isn't that bad.

I have the same problem since the last update

I was in the MBot Dynamic Campaign, low level and just switched on A1 with everthing still set up for navigation. No range changes from default or other master modes.

We're looking into this.

Yep, the radar causes a dramatic FPS drop for me as well.

I noticed a severe FPS drop when radar range is 60 km as well. So this issue is still present in 2.5.5.33184

It seems it was depended on what is in the "view" of the radar as it did not happen all the time. But when it happened, changing to any other range immediately brought the FPS back.

I think I have only run into this after having fired Rb-15's, not sure if it's only been at 60km range, I need to test that next time I run into it. My fix so far have been turning off my radar completely, but that can be a problem when it happens while I'm trying to land.

same issue on 60km, on 30km it was all OK!

120 is the range that performance is significantly reduced for me, just over land though

Still an issue... in VR this is catastrophic.

Yup, same here. Are we getting a fix ?