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Installation of .deb file taking too long via Ubuntu software center, it took more than 10 minutes to reach 81% of the installation then I cancelled the installation and used the dpkg -i command to install the same .deb file, measured the time running following command

time sudo dpkg -i rstudio-xenial-1.1.463-amd64.deb

real 0m12.346s
user 0m8.122s
sys 0m1.788s

I tried the same with different .deb files, all of it takes a lot of time in software center but happens in a few seconds in terminal. While installation is happening, I checked gnome-system-monitor, CPU use is barely 20%, so is RAM.

I am facing a similar issue in Ubuntu 18.04, Ubuntu 16, I checked in two AMD hardware - AMD A10 CPU(desktop) and AMD Ryzen 5 (laptop). Even in terminal, while compiling a code, it takes a lot of time in AMD Ryzen CPU but happens in few seconds in Intel.

A few specs are mentioned below

$lspci
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Root Complex
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Kaveri [Radeon R7 Graphics] (rev d4)
00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Kaveri HDMI/DP Audio Controller
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Root Port
00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Root Port
00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Root Port
00:10.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller (rev 09)
00:10.1 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller (rev 09)
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 40)
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 11)
00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 11)
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 11)
00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 11)
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 16)
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller (rev 01)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11)
00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] FCH PCI Bridge (rev 40)
00:15.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 0)
00:15.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Hudson PCI to PCI bridge (PCIE port 2)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Function 5
03:00.0 Ethernet controller: Intel Corporation I211 Gigabit Network Connection (rev 03)

Kernel

$ uname -a
Linux k10 4.15.0-36-generic #39-Ubuntu SMP Mon Sep 24 16:19:09 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

lshw Video output:

$sudo lshw -C Video
*-display 
 description: VGA compatible controller
 product: Kaveri [Radeon R7 Graphics]
 vendor: Advanced Micro Devices, Inc. [AMD/ATI]
 physical id: 1
 bus info: pci@0000:00:01.0
 version: d4
 width: 64 bits
 clock: 33MHz
 capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
 configuration: driver=amdgpu latency=0
 resources: irq:36 memory:e0000000-efffffff memory:f0000000-f07fffff ioport:f000(size=256) memory:feb00000-feb3ffff memory:c0000-dffff

In both the hardware and OS (Ubuntu 18 and Ubuntu 16), AMD's performance is poor.

Is anyone else facing the similar issue? Is there a good kernel which manages the CPU properly. I see many recommendations to use a kernel >=4.15, I have done that too but performance is still poor.