Hello @Tubooooooorg thank you for getting in touch with us.
Your CPU issue can be caused by various things, though I have never come across a CPU load when playing on a certain account.
Do your friends live in a different region to yourself or do you use any kind of VPN software, or change your datacentre settings to be able to play with them?
I recommend running through the following steps to try and lower the strain and usage on your CPU when playing the game >
-Check your power options in Windows and set it to High Performance in case of any CPU throttling. Open your Windows Settings, type 'Power Options, select 'Additional Power Settings', then select a High-Performance plan.
You can also try creating a new power plan in these options and set your maximum use of your CPU to 90% or another lower value, this can prevent your CPU from running at high usage, and will make your GPU work harder instead when playing the game, putting less strain on the CPU.
-Open the Task Manager tool on your PC, and look for any running programs other than the game and game launcher. Close down all of these programs, except the game and game launcher, then 'clean boot' your computer, and restart the game to make sure you free up your CPU usage just for the game >
https://support.ubisoft.com/en-GB/Article/000063761
-Test the CPU usage after lowering some settings. In the games menu and your GPU control software, enable Vsync, lower your FPS usage, and lower your graphical preset. Running games on high or ultra with maximum FPS, can cause strain not only on your Vram but CPU too
-Update all your game, game launcher, Windows, graphics card drivers, and peripheral drivers, as updating your drivers may eliminate compatibility issues or bugs that can sometimes cause increased CPU usage