My PC has an i3-9100 and when I open a single chrome tab, the CPU usage is at 100% across all cores, but sometimes it goes down again.

[Nico P]

PLEASE HELP.

Whenever I open a program the CPU usage of that program is incredibly high, and it runs unbelievably slowly.

What should I do?

[WhitetailAni]

What are your temps while that happens?

[Skiiwee29]

sounds like you have some kind of Crypto Currency extension installed, either knowingly or not. 

[Nico P]

Just now, ragnarok0273 said:

What are your temps while that happens?

The temperatures are at 45 degrees Celsius, or 113 degrees Fahrenheit, and there is no temperature throttling showing in Aida64

[Nico P]

1 minute ago, Skiiwee29 said:

sounds like you have some kind of Crypto Currency extension installed, either knowingly or not. 

I have tried multiple browsers and even different programs, but with all of them I have this issue

[WhitetailAni]

Just now, Nico P said:

The temperatures are at 45 degrees Celsius, or 113 degrees Fahrenheit, and there is no temperature throttling showing in Aida64

No idea then - I thought it might be a temps thing - that when it launches Chrome it gets too hot and thermal throttles or something, but that's not it.

What are your full specs?

[Skiiwee29]

2 minutes ago, Nico P said:

I have tried multiple browsers and even different programs, but with all of them I have this issue

download and run malwarebytes 

[porina]

Look at task manager, sorted by CPU usage. Is it only chrome that is doing it or are other processes involved?

[CommanderAlex]

Have you run anti-virus/anti-malware software to check for viruses/malware? Clear cache in your browsers. 

[Nico P]

Just now, porina said:

Look at task manager, sorted by CPU usage. Is it only chrome that is doing it or are other processes involved?

It's just chrome, but I have tried other browsers and the same thing happens

[Nico P]

1 minute ago, CommanderAlex said:

Have you run anti-virus/anti-malware software to check for viruses? Clear cache in your browsers. 

All I use is Windows Defender

[Nico P]

2 minutes ago, Skiiwee29 said:

download and run malwarebytes 

There was no malware detected

[Nico P]

Just now, ragnarok0273 said:

No idea then - I thought it might be a temps thing - that when it launches Chrome it gets too hot and thermal throttles or something, but that's not it.

What are your full specs?

I have an i7-7700k, 16gb of DDR4 RAM at 2400 MHz, a 1TB Samsung SATA SSD, 2TB WD BLUE HDD, and an MSI Z390

[WhitetailAni]

Nothing weird there, unless - do you have 1 or 2 sticks of RAM?

[Nico P]

Just now, ragnarok0273 said:

Nothing weird there, unless - do you have 1 or 2 sticks of RAM?

I have 2 sticks, each of them identical

[MrG13]

have you got any extensions installed in chrome? and are you saying this happens with all browsers on your PC? 

3 minutes ago, Nico P said:

It's just chrome, but I have tried other browsers and the same thing happens

 

[WhitetailAni]

Just now, Nico P said:

I have 2 sticks, each of them identical

Then it's not lack-of-dual-channel stuff, which wouldn't really do this anyway.

Does it go back to being fast after opening the program?

[MrG13]

Try this first: 

 

Disable Add-Ons

Right-click the title bar or press "Shift-Esc" to open Task Manager in Google Chrome. Click "CPU" to see which task is consuming the most resources.

Write down the name of the task if it's a plug-in or extension. Select the process and then click "End Process" to close the task.

Open "Settings" from the Chrome menu and then click "Extensions," or type "chrome://plugins" (without quotation marks) into the address bar and then press "Enter," depending on which type of add-on is exhibiting high CPU usage.

Locate the appropriate extension or plug-in in the list. Uncheck "Enabled" or click "Disable" to prevent the add-on from running.

 

Reset Google Chrome

Click the Chrome Menu on the toolbar and then click "Settings."

 

Select "Show Advanced Settings" from the bottom of the page and then click "Reset Browser Settings."

 

Click "Reset" to revert your browser configuration to default.

[Nico P]

Just now, ragnarok0273 said:

Then it's not lack-of-dual-channel stuff, which wouldn't really do this anyway.

Does it go back to being fast after opening the program?

It goes down very slightly to 95%, but nothing else happens afterwards.

[Nico P]

2 minutes ago, MrG13 said:

have you got any extensions installed in chrome? and are you saying this happens with all browsers on your PC? 

 

There are no extensions installed, and all browsers have this

[Skiiwee29]

8 minutes ago, Nico P said:

All I use is Windows Defender

Windows Defender is far far from perfect... I highly doubt you downloaded, installed, and ran a Malwarebytes scan in 2 minutes from when I posted to when you replied... 

[Nico P]

4 minutes ago, MrG13 said:

Try this first: 

 

Disable Add-Ons

Right-click the title bar or press "Shift-Esc" to open Task Manager in Google Chrome. Click "CPU" to see which task is consuming the most resources.

Write down the name of the task if it's a plug-in or extension. Select the process and then click "End Process" to close the task.

Open "Settings" from the Chrome menu and then click "Extensions," or type "chrome://plugins" (without quotation marks) into the address bar and then press "Enter," depending on which type of add-on is exhibiting high CPU usage.

Locate the appropriate extension or plug-in in the list. Uncheck "Enabled" or click "Disable" to prevent the add-on from running.

 

Reset Google Chrome

Click the Chrome Menu on the toolbar and then click "Settings."

 

Select "Show Advanced Settings" from the bottom of the page and then click "Reset Browser Settings."

 

Click "Reset" to revert your browser configuration to default.

I've reset and reinstalled google chrome, but nothing fixes the problem

[Kilrah]

5 minutes ago, Nico P said:

It goes down very slightly to 95%

How long?

Perfectly normal to jump to 100% for a short while but it wouldn't stay there.

[Nico P]

Just now, Kilrah said:

How long?

Perfectly normal to jump to 100% for a short while but it wouldn't stay there.

It's been at 100% now for 10 minutes, just staying on google.com

[MrG13]

2 minutes ago, Nico P said:

It's been at 100% now for 10 minutes, just staying on google.com

Check your power settings in windows and see if you have power saving mode enabled with a recent update on windows it can sometimes kick this in and cause issues