I need ideas to Optimize my Slackware

Hi there. again, i had bought 4GB RAM ( DDR2 800 MHz ) my pc is old, 2005
And by the moment i dont have way to get a newer.

Code:inxi -FzOutput
Quote:

inxi -Fz System: Kernel: 5.15.161 arch: x86_64 bits: 64 Desktop: KDE Plasma v: 5.23.5 Distro: Slackware 15.0 Machine: Type: Desktop Mobo: ASUSTeK model: M2N68-AM SE2 v: Rev X.0x serial: <filter> BIOS: American Megatrends v: 1801 date: 06/08/2010 CPU: Info: dual core model: AMD Athlon 64 X2 6000+ bits: 64 type: MCP cache: L2: 2 MiB Speed (MHz): avg: 1000 min/max: 1000/3000 cores: 1: 1000 2: 1000 Graphics: Device-1: NVIDIA GF108 [GeForce GT 620] driver: nouveau v: kernel Display: x11 server: X.Org v: 1.20.14 with: Xwayland v: 21.1.4 driver: X: loaded: modesetting unloaded: fbdev,vesa dri: nouveau gpu: nouveau resolution: 1152x864~75Hz API: EGL v: 1.5 drivers: N/A platforms: gbm,x11 API: OpenGL v: 4.3 vendor: nouveau mesa v: 21.3.5 renderer: NVC1 API: Vulkan v: 1.2.176 drivers: llvmpipe surfaces: xcb,xlib Audio: Device-1: NVIDIA MCP61 High Definition Audio driver: N/A Device-2: Ensoniq ES1371/ES1373 / Creative Labs CT2518 driver: snd_ens1371 Device-3: NVIDIA GF108 High Definition Audio driver: N/A API: ALSA v: k5.15.161 status: kernel-api Server-1: PulseAudio v: 15.0 status: active (root, process) Network: Device-1: NVIDIA MCP61 Ethernet type: network bridge driver: forcedeth IF: eth0 state: up speed: 100 Mbps duplex: full mac: <filter> IF-ID-1: virbr0 state: down mac: <filter>

Inxi just stuck in that last line.

The thing is i have "stuttering" with too much regulatiry, yestarday i change the thermal paste.

Code:dmidecode --type memoryQuote:

# dmidecode 3.3 Getting SMBIOS data from sysfs. SMBIOS 2.5 present. Handle 0x0008, DMI type 5, 20 bytes Memory Controller Information Error Detecting Method: 64-bit ECC Error Correcting Capabilities: None Supported Interleave: One-way Interleave Current Interleave: One-way Interleave Maximum Memory Module Size: 2048 MB Maximum Total Memory Size: 4096 MB Supported Speeds: 70 ns 60 ns Supported Memory Types: DIMM SDRAM Memory Module Voltage: 3.3 V Associated Memory Slots: 2 0x0009 0x000A Enabled Error Correcting Capabilities: None Handle 0x0009, DMI type 6, 12 bytes Memory Module Information Socket Designation: DIMM0 Bank Connections: 0 1 Current Speed: 25 ns Type: DIMM Installed Size: 2048 MB (Double-bank Connection) Enabled Size: 2048 MB (Double-bank Connection) Error Status: OK Handle 0x000A, DMI type 6, 12 bytes Memory Module Information Socket Designation: DIMM1 Bank Connections: 2 3 Current Speed: 25 ns Type: DIMM Installed Size: 2048 MB (Double-bank Connection) Enabled Size: 2048 MB (Double-bank Connection) Error Status: OK Handle 0x0026, DMI type 16, 15 bytes Physical Memory Array Location: System Board Or Motherboard Use: System Memory Error Correction Type: None Maximum Capacity: 4 GB Error Information Handle: Not Provided Number Of Devices: 2 Handle 0x0028, DMI type 17, 27 bytes Memory Device Array Handle: 0x0026 Error Information Handle: Not Provided Total Width: 64 bits Data Width: 64 bits Size: 2 GB Form Factor: DIMM Set: None Locator: DIMM0 Bank Locator: BANK0 Type: DDR2 Type Detail: Synchronous Speed: 800 MT/s Manufacturer: Manufacturer0 Serial Number: SerNum0 Asset Tag: AssetTagNum0 Part Number: PartNum0 Handle 0x002A, DMI type 17, 27 bytes Memory Device Array Handle: 0x0026 Error Information Handle: Not Provided Total Width: 64 bits Data Width: 64 bits Size: 2 GB Form Factor: DIMM Set: None Locator: DIMM1 Bank Locator: BANK1 Type: DDR2 Type Detail: Synchronous Speed: 800 MT/s Manufacturer: Manufacturer1 Serial Number: SerNum1 Asset Tag: AssetTagNum1 Part Number: PartNum1

By the moment i not had any clue why i had stuttering for example :
1 - Browsing Internet
2 - Hear music with Audacious ( Just Audacious Opened )
3 - Watching Videos in VLC or SMplayer ( Compiled from SBo repo )
4 - Playing Videogames like
* i Bejeweled 3 i using i Proton i from i Steam i
* i You Have To Win The Game i
* i Super Win The Game i
* Using RetroArch with any Core
* Using any emulator
* i Wakfu i from Ankama Launcher [ The Steam versions not work needs GLIBC_2.34, Slackware by the moment support until GLIBC_2.33 ]

Which information i need to determine what is causing stuttering ?
i dont know is something like :

* Not the best Graphics Drivers [ maybe "nvidia" instead "nouveau" ] or maybe a not good configuration for GPU using nouveau driver.

* Not the best Desktop Environment [ i am using KDE Plasma ]
* The RAM modules [ Overheat ? ]
* Bad Air Flow for the CPU FAN Cooler
* Bad BIOS Configuration
* The using of HDD

* Not enought good mix performance things [ Hardware / Software ]
- ZRAM or ZSWAP ?
- Bad Size for SWAP partition or SWAP File
- GameMode ?

Due to the fact that I'm running out of ideas, I resort to asking here on the forum.

Let's see what ideas you can give me to determine what is causing my stuttering so I can solve it so I can have a fluid experience.