Manjaro is lagging, window dragging not smooth, scrolling does jumps


I have a completely new PC with following specs:

Intel i5 10400
480 GB empty SATA SSD
no GPU, integrated graphics used

It is a completely fresh install and I have absolutely no idea what the reason could be.

I would appreciate any help!

I would point out you have provided close to zero input on the precise nature of your problem (no errors, no timings) . You have also provided about zero information regarding your installation (try the results of inxi -Fxxxz or similar)

The inxi output is

System:    Kernel: 5.9.11-3-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0 Desktop: KDE Plasma 5.20.4 tk: Qt 5.15.2 
       wm: kwin_x11 dm: SDDM Distro: Manjaro Linux 
Machine:   Type: Desktop Mobo: ASRock model: B460M Pro4 serial: <filter> UEFI: American Megatrends v: P1.20 date: 05/15/2020 
CPU:       Info: 6-Core model: Intel Core i5-10400 bits: 64 type: MT MCP arch: N/A L2 cache: 12.0 MiB 
       flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 69629 
       Speed: 4000 MHz min/max: 800/2901 MHz boost: enabled Core speeds (MHz): 1: 4000 2: 4000 3: 4000 4: 4000 5: 4000 
       6: 4000 7: 4000 8: 4000 9: 4000 10: 4001 11: 4000 12: 4000 
Graphics:  Device-1: Intel vendor: ASRock driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:9bc5 
       Display: x11 server: X .Org 1.20.10 compositor: kwin_x11 driver: intel unloaded: modesetting alternate: fbdev,vesa 
       resolution: 1920x1080~60Hz s-dpi: 96 
       OpenGL: renderer: Mesa Intel UHD Graphics 630 (CML GT2) v: 4.6 Mesa 20.2.3 direct render: Yes 
Audio:     Device-1: Intel vendor: ASRock driver: snd_hda_intel v: kernel bus ID: 00:1f.3 chip ID: 8086:a3f0 
       Sound Server: ALSA v: k5.9.11-3-MANJARO 
Network:   Device-1: Intel Ethernet I219-V vendor: ASRock driver: e1000e v: kernel port: efa0 bus ID: 00:1f.6 
       chip ID: 8086:0d55 
       IF: eno1 state: up speed: 1000 Mbps duplex: full mac: <filter> 
Drives:    Local Storage: total: 447.13 GiB used: 7.73 GiB (1.7%) 
       ID-1: /dev/sda vendor: Kingston model: SA400S37480G size: 447.13 GiB speed: 6.0 Gb/s serial: <filter> rev: 0107 
       scheme: GPT 
Partition: ID-1: / size: 438.82 GiB used: 7.73 GiB (1.8%) fs: ext4 dev: /dev/sda2 
Swap:      Alert: No Swap data was found. 
Sensors:   System Temperatures: cpu: 29.0 C mobo: N/A 
       Fan Speeds (RPM): N/A 
Info:      Processes: 262 Uptime: N/A Memory: 15.31 GiB used: 640.0 MiB (4.1%) Init: systemd v: 246 Compilers: gcc: N/A 
       Packages: pacman: 1185 Shell: Bash v: 5.0.18 running in: konsole inxi: 3.1.08

I do not see any errors nor any specific timing. For example when i move around the terminal window with my mouse, after a few seconds, or directly or after 10 seconds (nothing directly set) of moving it around it is shortly staying at the same position and then jumps to where the mouse should be.
As I am writing this I also notice issues with typings, as I type stuff and sometimes it is not typed in directly but is lagging for a second and then it is displayed.
Sorry for not directly giving that information.

You have 15GB and are using only 640MB of RAM… sounds like something is broken. Have you run diagnostics on your machine (from BIOS)?

Sorry but I am unsure how to run such diagnostics. However when doing free I see a total of 14920 and 435 used. I also enabled shared memory in UEFI because I read it somewhere, that’s where 1GB is.
I noticed that I have 3200 DDR4 memory in a up to DDR4-2933 board, however it shows up as 2133 in UEFI?

Try a liveusb and see if you get the same problem(s). Try manjaro xfce first. Then if things are still problematic, perhaps you should try something non-manjaro based to see if the problem is not distro specific. A good distro to try might be MXLinux ahs… if you do be certain to use the ahs version.

I had the same issues with ubuntu gnome, neon kde and another ubuntu based distro. They were partly different but the lags were the same.

Then you probably have a hardware problem. You should contact your hardware manufacturer especially check their site for guidance on running hardware diagnostics.

I also ran windows on it and that worked fine, had no issues after installing graphics drivers. That’s why it has to be something linux system related.

Could be the hardware vendor is simply incompatible with new drivers. Given you have had the problem with both *buntu & manjaro who are good with their new driver support… You probably simply have to wait a year before things work. You can check to see if the hardware is Ubuntu certified.

inxi rightly shows

Memory: 15.31 GiB used: 640.0 MiB (4.1%)

May I suggest something simpler first? Run htop and Search (F3 or click F3 on the bottom of the screen) ‘baloo’, my laptop shows three instances of balooruner with 0% CPU usage, but I’ve had situations of the computer being totally unresponsive, and had to ‘Ctrl Alt F2’ to reboot the machine, and the culprit was baloo hogging all the resources indexing files.
I do not know what happened last year, but this problem disappeared. You can check the default settings at System Settings > Search > File Search, unselect ‘Enable File Search’ to see if this is the problem.