I have a 13inch late 2009 macbook which is running Yosemite, but the computer is too slow.. according to the sets its original softer was Mountain Lion or Lion, not sure. Now, if I make a downgrade will it be faster?

Thanks guys!! But if I perform this downgrade to Snow Leopard will it be faster? Like, is it the source of my problems? cause these wheel is always spinning and it makes me crazy waiting for its response.. like said before, there is almost nothing on this computer..

As far as I see I need to update my memory... Here we go:

EtreCheck version: 2.9.11 (264)

Report generated 2016-05-05 12:12:05

Download EtreCheck from https://etrecheck.com

Runtime 6:58

Performance: Below Average

Click the [Support] links for help with non-Apple products.

Click the [Details] links for more information about that line.

Problem: Computer is too slow

Description:

Any action I try to perform on this mac takes several minutes, just to open a new tab or an app, even though there are almost nothing on the computer.

Hardware Information:ⓘ

MacBook (13-inch, Late 2009)

[Technical Specifications] - [User Guide] - [Warranty & Service]

MacBook - model: MacBook6,1

1 2.26 GHz Intel Core 2 Duo CPU: 2-core

2 GB RAM - Insufficient RAM! Upgradeable - [Instructions]

BANK 0/DIMM0

1 GB DDR3 1067 MHz ok

BANK 1/DIMM0

1 GB DDR3 1067 MHz ok

Bluetooth: Old - Handoff/Airdrop2 not supported

Wireless: en1: 802.11 a/b/g/n

Battery: Health = Normal - Cycle count = 408

Video Information:ⓘ

NVIDIA GeForce 9400M - VRAM: 256 MB

Color LCD 1280 x 800

System Software:ⓘ

OS X Yosemite 10.10.5 (14F27) - Time since boot: about 15 days

Disk Information:ⓘ

Hitachi HTS545025B9SA02 disk0 : (250,06 GB) (Rotational)

EFI (disk0s1) <not mounted> : 210 MB

MAC OS (disk0s2) / : 249.20 GB (161.08 GB free)

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

MATSHITADVD-R UJ-898 ()

USB Information:ⓘ

Apple Inc. Built-in iSight

Apple Inc. Apple Internal Keyboard / Trackpad

Apple Inc. BRCM2070 Hub

Apple Inc. Bluetooth USB Host Controller

Gatekeeper:ⓘ

Mac App Store and identified developers

Kernel Extensions:ⓘ

/Applications/Wondershare Filmora.app

[not loaded] com.Perfect.Driver.SystemAudioRecorder (1.1.0 - SDK 10.6 - 2016-04-11) [Support]

/Library/Application Support/Avast/components/fileshield/unsigned

[loaded] com.avast.AvastFileShield (3.0.0 - SDK 10.10 - 2016-04-12) [Support]

/Library/Application Support/Avast/components/proxy/unsigned

[loaded] com.avast.PacketForwarder (2.1 - SDK 10.10 - 2016-04-12) [Support]

System Launch Agents:ⓘ

[not loaded] 5 Apple tasks

[loaded] 140 Apple tasks

[running] 40 Apple tasks

[killed] 27 Apple tasks

27 processes killed due to insufficient RAM

System Launch Daemons:ⓘ

[not loaded] 47 Apple tasks

[loaded] 131 Apple tasks

[running] 63 Apple tasks

[killed] 20 Apple tasks

20 processes killed due to insufficient RAM

Launch Agents:ⓘ

[running] com.avast.secureline.update-agent.plist (2016-04-28) [Support]

[loaded] com.avast.secureline.userinit.plist (2016-04-28) [Support]

[running] com.avast.update-agent.plist (2016-04-13) [Support]

[loaded] com.avast.userinit.plist (2016-04-13) [Support]

Launch Daemons:ⓘ

[loaded] com.avast.init.plist (2016-04-13) [Support]

[loaded] com.avast.secureline.init.plist (2016-04-28) [Support]

[loaded] com.avast.secureline.uninstall.plist (2016-04-28) [Support]

[loaded] com.avast.secureline.update.plist (2016-04-28) [Support]

[loaded] com.avast.uninstall.plist (2016-04-13) [Support]

[loaded] com.avast.update.plist (2016-04-13) [Support]

[loaded] com.skype.skypeinstaller.plist (2016-01-07) [Support]

User Launch Agents:ⓘ

[loaded] com.avast.home.userinit.plist (2016-04-13) [Support]

[not loaded] com.avast.secureline.home.userinit.plist (2016-04-28) [Support]

[loaded] com.google.keystone.agent.plist (2016-03-02) [Support]

User Login Items:ⓘ

iTunesHelper Aplicativo (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

Google Drive Aplicativo (/Applications/Google Drive.app)

Other Apps:ⓘ

[loaded] com.avast.account

[loaded] com.avast.crashreport

[running] com.avast.daemon

[running] com.avast.fileshield

[running] com.avast.helper

[running] com.avast.proxy

[loaded] com.avast.secureline.burger

[running] com.avast.secureline.service

[running] com.avast.service

[running] com.google.Chrome.51436

[running] com.google.GoogleDrive.54276

[loaded] 391 Apple tasks

[running] 139 Apple tasks

[killed] 57 Apple tasks

Internet Plug-ins:ⓘ

Default Browser: 600 - SDK 10.10 (2016-03-23)

QuickTime Plugin: 7.7.3 (2016-03-23)

3rd Party Preference Panes:ⓘ

None

Time Machine:ⓘ

Time Machine not configured!

Top Processes by CPU:ⓘ

14% Google Chrome Helper(7)

6% Google Chrome

6% kernel_task

5% WindowServer

5% coreaudiod

Top Processes by Memory:ⓘ

323 MB kernel_task

274 MB Google Chrome Helper(7)

96 MB Google Chrome

47 MB storeassetd

29 MB WindowServer

Virtual Memory Information:ⓘ

53 MB Free RAM

1.95 GB Used RAM (167 MB Cached)

942 MB Swap Used

Thank you! I'll buy some RAM then... I was just wondering if downgrading would help me for now, but I'm convinced that there is no better thing to do than upgrade its memory... a 4GB is the maximum it supports, anyway.

Really? I've read somewhere here that for my computer settings the maximum is 4GB.