# Very high CPU load, audio/video problems for Web SDK **URL:** \ **Category:** Web\ **Created:** [February 7, 2020, 10:18am UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937 "2020-02-07T10:18:15Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![harald.glanzer](https://avatars.discourse-cdn.com/v4/letter/h/eada6e/32.png) [@harald.glanzer](https://devforum.zoom.us/u/harald.glanzer)\ **Post date:** [February 7, 2020, 10:18am UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/1 "2020-02-07T10:18:15Z")
Hi, using your latest web SDK 1.7, we are getting very high CPU loads on our platforms. This was acceptable on our ‘stronger’ models, but is very bad on our ‘low-end’ model (nevertheless a 4x core Intel cpu i3-7100U CPU @ 2.40GHz), as video / audio begins stuttering and/or A/V is out of sync the zoom application is basically the only application running on the machine, occupying the CPU most of the time. if muting VIDEO from the _local_ side (where we see the performnace problems / high cpu load), we receive audio / video in acceptable quality and delay (between audio/video) suspecting from [the WASM section of your API description: preLoadWasm()](https://marketplace.zoom.us/docs/sdk/native-sdks/web/reference) and also by observing GPU load(which is not changing when starting up zoom JS), we suspect that you do all the en/decoding in JS? also: using the ‘normal’ browser based webapp in chromium 78 (i.e. the non-JS SDK client), the platform in question delivers sufficient audio/video quality and delay. - Is there any possibility to improve this, by e.g. using different webassemblies, restricting resolution, …? - are there plans to improve this performance issue in an upcoming JS SDK version? - switch to chromium based en/decoding, instead of JS code? thx Hari ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [February 7, 2020, 5:07pm UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/2 "2020-02-07T17:07:48Z")
Hey @harald.glanzer, May I ask what country you are located in, and if you are using the [CDN or Local version of the Web SDK](https://marketplace.zoom.us/docs/sdk/native-sdks/web/getting-started/integrate)? Thanks, Tommy ---
**Author:** ![harald.glanzer](https://avatars.discourse-cdn.com/v4/letter/h/eada6e/32.png) [@harald.glanzer](https://devforum.zoom.us/u/harald.glanzer)\ **Post date:** [February 7, 2020, 5:42pm UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/3 "2020-02-07T17:42:07Z")
hi, we are located in austria / europe, and are using the local version 1.7.0. a colleague of mine, located in north germany, can’t reproduce the problem with the same platform. he reports that his cpu load is much lower, and audio / video quality is ok and in sync. are you using different encoders / resolutions, depending on the country? thx hari ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [February 7, 2020, 5:53pm UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/4 "2020-02-07T17:53:11Z")
Hey @harald.glanzer, thanks! Can you send me the meeting id used so I can look into the logs? Thanks, Tommy ---
**Author:** ![harald.glanzer](https://avatars.discourse-cdn.com/v4/letter/h/eada6e/32.png) [@harald.glanzer](https://devforum.zoom.us/u/harald.glanzer)\ **Post date:** [February 7, 2020, 5:55pm UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/5 "2020-02-07T17:55:57Z")
for example: 5398465177 thx hari ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [February 7, 2020, 6:18pm UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/6 "2020-02-07T18:18:34Z")
Thanks @harald.glanzer, We are looking into this and will get back to you. (ZOOM-137004) Thanks, Tommy ---
**Author:** ![harald.glanzer](https://avatars.discourse-cdn.com/v4/letter/h/eada6e/32.png) [@harald.glanzer](https://devforum.zoom.us/u/harald.glanzer)\ **Post date:** [February 10, 2020, 2:04pm UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/7 "2020-02-10T14:04:49Z")
hello again, i compared the SDK and the in-browser clients on the platform in question. it turned out that the in-browser client (i.e. the link ‘join from your browser’) produces much better results than the SDK client: in browser client: - smaller cpu load - higher gpu load - good AV quality, good A\<–\>V delay sdk client: - high cpu load (busiest zoom thread needs almost one CPU for its own) - nearly unaffected gpu load - unacceptable A\<–\>V delay / video lag questions: - is your SDK client using GPU for en/decoding? - is there _any_ possibility to use a different video encoder (via setZoomJSLib() call) with different resolution / framerate - is it possible to check which resolution / framerate is used for a specific meeting attendee, or globally for the whole meeting? - are you aware of such a ‘cpu load’ problem, regarding the SDK client? - when will you release your next SDK version 1.8.0, and will there be improvements regarding this problem? - are there any news regarding my last request (ZOOM-137004)? thx in advance, hari ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [February 10, 2020, 8:25pm UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/8 "2020-02-10T20:25:58Z")
Hey @harald.glanzer, We are in the process of looking into (ZOOM-137004). > [@harald.glanzer](#): > > is your SDK client using GPU for en/decoding? "The Web SDK enables the development of video applications powered by Zoom’s core framework inside an HTML5 web client through a highly optimized WebAssembly module. As an extension of the Zoom browser client, this SDK is intended for implementations where the end user has a low-bandwidth environment, is behind a network firewall, or has restrictions on their machine which would prevent them from installing the Zoom Desktop or Mobile Clients." CC @JackYang, can help answer this one. > [@harald.glanzer](#): > > is there _any_ possibility to use a different video encoder (via setZoomJSLib() call) with different resolution / framerate Not at this time. > [@harald.glanzer](#): > > is it possible to check which resolution / framerate is used for a specific meeting attendee, or globally for the whole meeting? The meeting resolution will have a max of 360p: [https://marketplace.zoom.us/docs/sdk/native-sdks/web](https://marketplace.zoom.us/docs/sdk/native-sdks/web) “Currently, the Zoom Web SDK encodes at a maximum resolution of 360p. If a user is in a meeting with both native and browser clients, the browser client video displayed within the native client will be of lower quality due to encoding limitations.” > [@harald.glanzer](#): > > Are you aware of such a ‘cpu load’ problem, regarding the SDK client? We are not, but we are investigating your issue. > [@harald.glanzer](#): > > when will you release your next SDK version 1.8.0, and will there be improvements regarding this problem? If this is a bug, then yes we will work on fixing it in an upcoming release. Thanks, Tommy ---
**Author:** ![harald.glanzer](https://avatars.discourse-cdn.com/v4/letter/h/eada6e/32.png) [@harald.glanzer](https://devforum.zoom.us/u/harald.glanzer)\ **Post date:** [February 10, 2020, 10:36pm UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/9 "2020-02-10T22:36:53Z")
thx for your detailed answer. if i can assist somehow in debugging this issue, please tell me! regards, hari ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [February 10, 2020, 11:19pm UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/10 "2020-02-10T23:19:14Z")
Hey @harald.glanzer, happy to help! I’ll let you know if we need additional info! Thanks, Tommy ---
**Author:** ![harald.glanzer](https://avatars.discourse-cdn.com/v4/letter/h/eada6e/32.png) [@harald.glanzer](https://devforum.zoom.us/u/harald.glanzer)\ **Post date:** [February 21, 2020, 9:20am UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/11 "2020-02-21T09:20:55Z")
hi again, any news here? thx hari ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [February 21, 2020, 5:06pm UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/12 "2020-02-21T17:06:59Z")
Hey @harald.glanzer, No updates yet. After we look into this, we will get back to you. Thanks, Tommy ---
**Author:** ![mateus.gomes](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/mateus.gomes/32/2418_2.png) [@mateus.gomes](https://devforum.zoom.us/u/mateus.gomes)\ **Post date:** [May 8, 2020, 9:18pm UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/13 "2020-05-08T21:18:03Z")
Any updates on that? My computer is really unusable when I open Zoom at this moment. Here’s my CPU load when I use Zoom: ![Screen Shot 2020-05-08 at 18.13.42](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/2X/f/f42a56bdb4227eddf70d442156d6f4a80cc4f972.png) ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [May 13, 2020, 9:12pm UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/14 "2020-05-13T21:12:14Z")
Hey @mateus.gomes, Can you please share what kind of computer you have and the specs so we can investigate? Thanks, Tommy ---
**Author:** ![pierre.a.lafortune](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/pierre.a.lafortune/32/8799_2.png) [@pierre.a.lafortune](https://devforum.zoom.us/u/pierre.a.lafortune)\ **Post date:** [May 19, 2020, 9:47pm UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/15 "2020-05-19T21:47:53Z")
I am seeing the same spike in cpu load when a zoom call begins. I have a macbook pro 15-inch. 2.8 ghz i7 16gb memory ---
**Author:** ![spongiephone](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/spongiephone/32/923_2.png) [@spongiephone](https://devforum.zoom.us/u/spongiephone)\ **Post date:** [May 22, 2020, 1:05am UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/16 "2020-05-22T01:05:52Z")
Hi, this thread follows an issue I’m also having. We are using a custom built i7 7700k 4 core. 16 gb of ram. We are using the on-board graphics with no dedicated gpu. There are high cpu loads once we connect to audio or video, and both at the same time. The issue was repeatable, on a fresh install on windows 10, whichever the latest build is. ---
**Author:** ![karthikeyan.ramaraj](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/karthikeyan.ramaraj/32/9033_2.png) [@karthikeyan.ramaraj](https://devforum.zoom.us/u/karthikeyan.ramaraj)\ **Post date:** [May 22, 2020, 12:15pm UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/17 "2020-05-22T12:15:51Z")
Hi @tommy , We are also facing the same CPU spike issue which is quickly draining the battery and produce more heat. CPU % was went up to 80%. We are accessing from India. We used the latest Web SDK 1.7.7 both CDN and Local. # Google Chrome Version 81.0.4044.138 (Official Build) (64-bit) # macOS Catalina Version 10.15.3 (19D76) # MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports) # Processor 2.3 GHz Dual-Core Intel Core i5 # Memory 8 GB 2133 MHz LPDDR3 # Graphics Intel Iris Plus Graphics 640 1536 MB ---
**Author:** ![s.tootle](https://avatars.discourse-cdn.com/v4/letter/s/e9a140/32.png) [@s.tootle](https://devforum.zoom.us/u/s.tootle)\ **Post date:** [May 27, 2020, 10:21am UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/18 "2020-05-27T10:21:38Z")
Using the zoom client, I am also getting very high cpu usage. On a Lenovo T590 (4k resolution), viewing with full screen results in \>100% cpu usage on ubuntu 20.04. Rescaling the window to a smaller size can get the cpu down to 30-50%. ---
**Author:** ![gborges](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/gborges/32/9453_2.png) [@gborges](https://devforum.zoom.us/u/gborges)\ **Post date:** [May 29, 2020, 6:02am UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/19 "2020-05-29T06:02:23Z")
same problem here… my mac doesn’t run anything else when in a zoom meeting ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [June 3, 2020, 7:21pm UTC](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937/20 "2020-06-03T19:21:08Z")
Hey @gborges, @s.tootle, @karthikeyan.ramaraj, @spongiephone, @pierre.a.lafortune, Thanks for reporting this. I will forward these details to our Web SDK engineers. (CS-1387) Thanks, Tommy [Next page](https://devforum.zoom.us/t/very-high-cpu-load-audio-video-problems-for-web-sdk/7937.md?page=2)