Today, I tried a few things, too. Perhaps my results could be helpful for us. Sorry, this will be a long post ;). I have following the devices:

• Raspberry 3 Model B - my standard mirror device
• Asus Tinker Board
• odroid C2 (ARM64)

Software Versions MM:

• MM v2.1.2 on all devices

Electron Versions:

• Raspberry 3 Model B (v1.6.11)
• Asus Tinker Board (v1.4.15) but v1.6.11 works the same
• odroid C2 (ARM64) (v.1.8.0 - because of the x64; I uninstalled spectron, because there is no x64 support)

Configs:

• Standard (Calendar, Compliments, Newsfeed, Clock)
• MyConfig (Calendar, Compliments, Newsfeed, Clock, Todoist, Sonos, Netatmo, WheaterUnderground, Stocks, Reiseauskunft, Strava); here, cpu usage is a little bit higher, but the behaviour is the same.

The 100% usage topic seems to be a electron problem and I think it can be solved with some downgrades of MM2 and electron. v.1.7.5 seems to be bad. Whatever, here is what I found out:

1. nmon with the ATB (v1.7.5 electron here) and default config:
   
   CPU usage while transitions is very high. Lagging!

2. nmon with the ATB (v1.4.15 electron here) and default config:
   
   CPU usage is better but, to be honest, way to high for transitions (cpu peaks). And still some small lags.

3. nmon with the odroid and default config:
   
   The best result. but still peaks while the transitions. Some lags here, too.

So, here is my actual config:
4) nmon with the Raspberry 3 Model B and MyConfig:

Same here, still lags.

The last thing I tried was very interesting. I opened my chromium on the ATB and put the webadress from my Raspberry 3 Model B device in it. So I openend that Rapsberry 3 Model B MM2 on my ATB. And that happens:

Absolutely smooth, no peaks at all.

BTW: My Raspberry 3 Model didn’t have any more cpu usage while that process.

Can anybody tell us, WHY?

@wtidwell said in Electron CPU usage:

@SashMare @Mykle1 my
I also downgraded electron to 1.4.15 and I’m seeing dramatically improved performance!

Do you have some CPU load Screenshots? As I read, around 55% is to high too.

@Mykle1 said in Electron CPU usage:

@djsunrise19 said in Electron CPU usage:

Thanks. Yes, v1.4.15.

I just had a thought (miracle). What version of MM is everyone using?

My Pi3 B mirror is running MM version 2.1.0. I’ve had no reason to update it. It’s rock solid

I had this problems since the new MM2 Version. Very long so. But my version is the newest one. 2.1.2 I think.

@Mykle1 Thanks. Yes, v1.4.15.

My two cents again ;): My electron pakackage.json version is v.1.6.10. I made a downgrade to v1.4.15. Code says “invalid”. But the installation seems to work? Do you guys know, where I can check the installed electron version?

No effect. 55% CPU and very sluggish (256MB GPU Memory):

Input from my side: I checked the issues with electron 1.8 beta. Same problems.

@Mykle1 I’m sorry. There is nothing directly to you. I only try to write as much as I find out in that situation to know as much as we can. I’m very thankful that you’re trying to help (and didn’t have our transition problem).

@Mykle1 Yes, you’re right. Yesterday I installed the new raspbian stretch and all MM tools manually, uninstalled electron and installed the @beta (1.8.). I wanted to give that a try. But still the same.

As you can see, the problem is there , less or more, over months (with that 50-70% cpu usage). With 2-3 animations at the same time my raspi struggles (raspi2 and raspi3). But a few days ago, there were an github update. Since that update my mirror is unusable. Why?

git pull && npm install

says, that there was a change in the readme file only. But it doesn’t seem so.

@TiemenMoesker said in Electron CPU usage:

@djsunrise19

So the CPU usage doens’t spike with animations?

Not so high like my first one (100% permanently), about 50-60%. Here is a picture from my ATB, that arrives today. Naked installations, standard config / css / modules. 75% peak. Bad.