Since the most recent Windy.com update a few days ago, the map is extremely laggy. I'm on a very, very high-end computer, and yet it can take a second or two for the map to update after zooming a step or advancing the forecast time one step. Simply intolerable and practically unusable. This is using Firefox, the latest version (141). Chrome (also latest version) has the same issue, although it manifests itself slightly differently, with an initial lag and then a fast load, lag again, then fast load, and so on. Both worked perfectly fine, fast and smooth, before the recent update.
Nothing else has changed on my system in that time, and everything else, everywhere else, works just as fine as before, so this is very clearly a windy.com issue.

@schilpat
The problem is in Chrome as well (as I mentioned in my original thread https://community.windy.com/topic/41479/map-is-extremely-laggy-since-the-latest-update/2?_=1755883381930), but it doesn't look exactly the same. Firefox seems to perform the change (zooming in or out or moving a time step), then pause for half a second to a second with a very low-res version of the map, and then draw everything. Chrome seems to do a pause initially, then do the zoom or move, then draw quickly. It's not quite as slow as Firefox, but still much slower than normal, though when I say "normal", I mean how it used to be in Firefox. I detest Chrome and never use it other than for occasional sites that have Chrome-specific features and don't work in Firefox.

I'm on a slightly older driver due to compatibility issues. Nvidia has had a long string of drivers that have messed up a few things, which has made me wary of updating. But drivers from the beginning of this year shouldn't be too old for a modern website. My mobile hasn't had an update of any kind in over a year, and it works fine there.

Well, it was a good run. Maybe time to find an alternative. I've enjoyed Windy, but it's unusable now, and I'm reading between the lines that this is how it is going forward.

@Suty said in Map is extremely laggy since the latest update:

@rdo118 Could you please tell us what versions have this issue in Windy? Do we talk about all of them or only radar or other layers?

What versions? This is the web version, running in browsers. What your internal version of that is, I don't know.

All layers are affected, but the weather radar layer stands out as not that laggy (it's not one I normally use - my main layers are wind, thunderstorm risk and rain/thunder). It's not good, and not normal, but if all other layers are 10 on lagginess scale, then weather radar is maybe a 2 or 3.

@Wheats They're obviously using a feature that isn't well supported or that they have implemented it incorrectly (or both). The old compatible graphics mode eliminated the laggy issue that was introduced in an update a while ago (can't recall exactly when as the fix was quick and easy - then). They have now, in their infinite wisdom, removed that option, and so those of us who are affected are now stuck with a practically unusable version of Windy. My browsers (yes, this affects all of them, with completely different engines) are up to date, my operating system is up to date, my graphics drivers are up to date. The WebGL demo I was asked to run works perfectly. NO OTHER SITE misbehaves. It's blatantly obvious that they've messed up, but they ignore it. Fixing it could take some time, I fully understand that. But not even commenting or responding back with a status or future plan for a possible fix, or a decision to not fix as too few users are affected (which is what I assume is the case), is just pathetic and terrible customer service.

I was mistaken. The improved performance seems to be caused by the performance recording process. Something that that process/mechanism is doing makes the site work slightly better while capturing performance data. Now that I tried to use the site normally, the lag was just as before. So, no improvement after all.

@schilpat

This is all about loading stuff. When I zoom or pan or use the timeline scrub for forecasts, new tiles are being loaded, and that's where it all breaks down. It takes ages, and while the interface is waiting for the new tiles, everything is frozen. Just panning around very gently inside the tiny area where all the tiles have loaded already, is fine. No lag there.

I'm using Firefox, not Chrome. I did the equivalent thing in Firefox and there's nothing in the results any living being can make sense of. It's like a mega tetris with random colors. There are a few hundred different bits of code or procedure names plattered all over it, and that's simply impossible to compile into anything useful.

However, the latest update is about half as laggy as the current version at the time I created my first post. So something you've changed was in the right direction. It's still unbearably laggy, but there is a difference.

Here's the Firefox tetris:

And the equivalent in Chrome, quite possibly even worse than the Firefox one:

@Wheats They're obviously using a feature that isn't well supported or that they have implemented it incorrectly (or both). The old compatible graphics mode eliminated the laggy issue that was introduced in an update a while ago (can't recall exactly when as the fix was quick and easy - then). They have now, in their infinite wisdom, removed that option, and so those of us who are affected are now stuck with a practically unusable version of Windy. My browsers (yes, this affects all of them, with completely different engines) are up to date, my operating system is up to date, my graphics drivers are up to date. The WebGL demo I was asked to run works perfectly. NO OTHER SITE misbehaves. It's blatantly obvious that they've messed up, but they ignore it. Fixing it could take some time, I fully understand that. But not even commenting or responding back with a status or future plan for a possible fix, or a decision to not fix as too few users are affected (which is what I assume is the case), is just pathetic and terrible customer service.

@Wheats They've shown that they don't care, so I'm not going to be nice at that point. They should at least be honest and state clearly that this is something that won't be fixed, and that they don't care. As of now, people could be fooled into thinking they will fix this and renew subscriptions but still be stuck with an unusable service.

Clearly, this is an issue they're actively ignoring. Either due to incompetence (i.e. "we've started using a function that we've implemented incorrectly but we don't know how to fix it") or because they think it's ok to break the site for a small number of users, as an "acceptable loss".

@schilpat
I'm now on the latest GPU drivers. The laggy behavior is exactly the same.
Something is clearly wrong with your implementation, as this is the only site where this happens.

@schilpat
The problem is in Chrome as well (as I mentioned in my original thread https://community.windy.com/topic/41479/map-is-extremely-laggy-since-the-latest-update/2?_=1755883381930), but it doesn't look exactly the same. Firefox seems to perform the change (zooming in or out or moving a time step), then pause for half a second to a second with a very low-res version of the map, and then draw everything. Chrome seems to do a pause initially, then do the zoom or move, then draw quickly. It's not quite as slow as Firefox, but still much slower than normal, though when I say "normal", I mean how it used to be in Firefox. I detest Chrome and never use it other than for occasional sites that have Chrome-specific features and don't work in Firefox.

I'm on a slightly older driver due to compatibility issues. Nvidia has had a long string of drivers that have messed up a few things, which has made me wary of updating. But drivers from the beginning of this year shouldn't be too old for a modern website. My mobile hasn't had an update of any kind in over a year, and it works fine there.

Well, it was a good run. Maybe time to find an alternative. I've enjoyed Windy, but it's unusable now, and I'm reading between the lines that this is how it is going forward.

@schilpat
And the rest of the requested data:

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Build ID 	20250811145442
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OS 	Windows_NT 10.0 19045
Application Binary 	C:\Program Files\[removed for privacy reasons]\firefox.exe
Profile Folder 	
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Build Configuration 	about:buildconfig
Memory Use 	about:memory
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Multiprocess Windows 	1/1
Fission Windows 	1/1 Enabled by default
Remote Processes 	28
Enterprise Policies 	Active
Google Location Service Key 	Found
Google Safebrowsing Key 	Found
Mozilla Location Service Key 	Found
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@schilpat said in Please restore compatible graphics mode:

about:support#graphics

The fish demo works perfectly fine. My display is limited to 60 Hz, so the demo can't go above that, but I get a steady and smooth 60 fps up to the 15 000 setting. 20 000 gets me 55-57 fps. 30 000 is in the high 30s fps.

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      "maxComputeWorkgroupStorageSize": 32768,
      "maxComputeWorkgroupsPerDimension": 65535,
      "maxDynamicStorageBuffersPerPipelineLayout": 4,
      "maxDynamicUniformBuffersPerPipelineLayout": 8,
      "maxInterStageShaderVariables": 16,
      "maxSampledTexturesPerShaderStage": 64,
      "maxSamplersPerShaderStage": 64,
      "maxStorageBufferBindingSize": 1073741824,
      "maxStorageBuffersPerShaderStage": 64,
      "maxStorageTexturesPerShaderStage": 64,
      "maxTextureArrayLayers": 2048,
      "maxTextureDimension1D": 16384,
      "maxTextureDimension2D": 16384,
      "maxTextureDimension3D": 2048,
      "maxUniformBufferBindingSize": 65536,
      "maxUniformBuffersPerShaderStage": 64,
      "maxVertexAttributes": 32,
      "maxVertexBufferArrayStride": 2048,
      "maxVertexBuffers": 16,
      "minStorageBufferOffsetAlignment": 32,
      "minUniformBufferOffsetAlignment": 256
    }
  }
}
DirectWrite	true (10.0.19041.5794)
GPU #1
Active	Yes
Description	NVIDIA GeForce RTX 4080
Vendor ID	0x10de
Device ID	0x2704
Driver Version	32.0.15.7216
Driver Date	1-26-2025
Drivers	C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_1e8724cced6e93d4\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_1e8724cced6e93d4\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_1e8724cced6e93d4\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_1e8724cced6e93d4\nvldumdx.dll C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_1e8724cced6e93d4\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_1e8724cced6e93d4\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_1e8724cced6e93d4\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_1e8724cced6e93d4\nvldumd.dll
Subsys ID	40be1458
RAM	16376
GPU #2
Active	No
RAM	0
Diagnostics
AzureCanvasBackend	skia
AzureCanvasBackend (UI Process)	skia
AzureContentBackend	skia
AzureContentBackend (UI Process)	skia
AzureFallbackCanvasBackend (UI Process)	skia
CMSOutputProfile	[removed because it was insanely long]
Display0	3840x2160@60Hz scales:1.000000|1.250000
Display1	2560x1440@60Hz scales:1.000000|1.000000
DisplayCount	2
HardwareStretching	both=1 window-only=0 full-screen-only=1 none=0 error=0
GPUProcessPid	43356
ClearType Parameters	\\.\DISPLAY1 [ Gamma: 1.8 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ] \\.\DISPLAY2 [ Gamma: 1.8 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ] 
Font Visibility Debug Info	Windows Platform
Decision Log
HW_COMPOSITING	
default	available		
user	force_enabled	Force-enabled by pref	
D3D11_COMPOSITING	
default	available		
DIRECT2D	
default	disabled	Disabled by default	Blocklisted; failure code FEATURE_FAILURE_DISABLED
D3D11_HW_ANGLE	
default	available		
GPU_PROCESS	
default	available		
user	force_enabled	User force-enabled via pref	
WEBRENDER	
default	available		
WEBRENDER_COMPOSITOR	
default	available		
runtime	unavailable	No DirectComposition usage	Blocklisted; failure code FEATURE_FAILURE_DCOMP_PREF_DISABLED
WEBRENDER_PARTIAL	
default	available		
WEBRENDER_SHADER_CACHE	
default	available		
WEBRENDER_OPTIMIZED_SHADERS	
default	available		
WEBRENDER_ANGLE	
default	available		
WEBRENDER_DCOMP_PRESENT	
default	available		
user	disabled	User disabled via pref	Blocklisted; failure code FEATURE_FAILURE_DCOMP_PREF_DISABLED
WEBRENDER_SCISSORED_CACHE_CLEARS	
default	available		
WEBGPU	
default	available		
WINDOW_OCCLUSION	
default	available		
HARDWARE_VIDEO_DECODING	
default	available		
HARDWARE_VIDEO_ENCODING	
default	available		
HW_DECODED_VIDEO_ZERO_COPY	
default	available		
VP8_HW_DECODE	
default	available		
VP9_HW_DECODE	
default	available		
REUSE_DECODER_DEVICE	
default	available		
BACKDROP_FILTER	
default	available		
CANVAS_RENDERER_THREAD	
default	available		
ACCELERATED_CANVAS2D	
default	available		
AV1_HW_DECODE	
default	available		
REMOTE_CANVAS	
default	available		
runtime	blocked	Disabled without Direct2D	Blocklisted; failure code FEATURE_REMOTE_CANVAS_NO_DIRECT2D
VP8_HW_ENCODE	
default	available		
VP9_HW_ENCODE	
default	available		
AV1_HW_ENCODE	
default	available		
WMF_HW_DRM	
default	available		
GL_NORM16_TEXTURES	
default	available		
Failure Log
(#0) 	CP+[GFX1-]: Managed to allocate after flush.
(#1) 	CP+[GFX1-]: Managed to allocate after flush.

@Windy9111 @Suty
This sounds very similar to the lag issue I reported a few days ago. I had the same problem in the past, but it went away when I turned on that setting. Since the setting is gone, I assumed it was always on, but from what I read here, it's always (effectively) off. Which means my problem with lag might never resolve.