Hello Peter,
Like iPanik said, you can exclude some types of files from scanning, however this won't help much, as Kaspersky File Scanner by default will only scan the new and recently modified files.
If you really want to increase the performance of the scanner, I would suggest that you set the File Anti-Virus feature to "Low". What this means is that Kaspersky will scan the files by the extensions.
If you have selected Files scanned by extension as virus scan objects, File Anti-Virus or a virus scan task scans the files with the extensions listed below for viruses.
Extension - Type of file
ASP - Active Server Pages script.
BAT - Batch file.
BIN - Binary file.
CHM -Compiled HTML file.
CLA -Java class.
CMD -Command file for Microsoft Windows NT (similar to a bat file for DOS), OS/2.
COM - Executable file for a program no larger than 64 KB.
CPL - Microsoft Windows control panel module.
DLL - Dynamic link library.
DOC* - Microsoft Office Word document, for example:
DOC – Microsoft Office Word document;
DOCX – Microsoft Office Word 2007 document with XML support;
DOCM – Microsoft Office Word 2007 document with macro support.
DOT* -Microsoft Office Word document template, for example:
DOT – Microsoft Office Word document template;
DOTX – Microsoft Office Word 2007 document template;
DOTM – Microsoft Office Word 2007 document template with macro support.
DPL - Compressed Borland Delphi library.
DRV - Driver for a device.
DWG -AutoCAD drawing database.
EMF - Enhanced Metafile format file. Next generation of Microsoft Windows OS metafiles. EMF files are not supported by 16-bit Microsoft Windows.
EML - Microsoft Outlook Express email message.
EXE - Executable file or self-extracting archive.
FPM - Database program, Microsoft Visual FoxPro start file.
HLP - Win Help file.
HTA -Hypertext program for Microsoft Internet Explorer.
HTM - Hypertext document.
HTT - Microsoft Windows hypertext header.
ICO - Object icon file.
INI - Initialization file.
JPG, JPEG
Compressed image graphics format.
JS, JSE - JavaScript source text.
LNK - Microsoft Windows link file.
MBX - Extension for saved Microsoft Office Outlook email.
MD- Microsoft Office Access documents and files, such as:
MDA – Microsoft Office Access workgroup;
MDB – database.
MSG - Microsoft Mail email message
MSI - Microsoft Windows Installer packet.
NWS - New Microsoft Outlook Express email message.
OCX - Microsoft OLE (Object Linking and Embedding) object.
OTM - VBA project for Microsoft Office Outlook.
OV? - MS Word executable files.
PDF - Adobe Acrobat document.
PHP - Script integrated into HTML file.
PHT - HTML file with integrated PHP scripts.
HTML - file with integrated PHP scripts.
PIF - Program information file
PLL - Email message.
PNG -Bitmap graphic file after lossless compression.
PP* - Microsoft Office PowerPoint documents and files, such as: PPS – Microsoft Office PowerPoint slide;
PPT – presentation;
PPTX – Microsoft Office PowerPoint 2007 presentation;
PPTM – Microsoft Office PowerPoint 2007 presentation with macro support;
POTX – Microsoft Office PowerPoint 2007 presentation template;
POTM – Microsoft Office PowerPoint 2007 presentation template with macro support;
PPSX – Microsoft Office PowerPoint 2007 slide show;
PPSM – Microsoft Office PowerPoint 2007 slide show with macro support;
PPAM – Microsoft Office PowerPoint 2007 plug-in with macro support.
PRG - Program text for dBase, Clipper or Microsoft Visual FoxPro, or a WAVmaker program.
REG - Microsoft Windows system register key registration file.
RTF - Document in Rich Text Format.
SCR - Microsoft Windows splash screen file.
SLDX - Microsoft Office PowerPoint 2007 slide.
SLDM - Microsoft PowerPoint 2007 slide with macro support.
SHS - Shell Scrap Object Handler fragment.
SWF - Shockwave Flash packet object.
SYS - System file.
THEM - Microsoft Windows 95 desktop wallpaper file.
THMX - Microsoft Office 2007 theme.
TSP - Program running in split-time mode.
VBE - BIOS video extension.
VBS - Visual Basic script.
VXD - Microsoft Windows virtual device driver.
WSF - Microsoft Windows script.
WSH -Microsoft Windows Script Host file.
XL*
Microsoft Office Excel documents and files, such as:
XLA – Microsoft Office Excel extension;
XLC – diagram, XLT – document template;
XLSX – Microsoft Office Excel 2007 workbook;
XLTM – Microsoft Office Excel 2007 workbook with macro support;
XLSB – Microsoft Office Excel 2007 workbook in binary (not XML) format;
XLTX – Microsoft Office Excel 2007 template;
XLSM – Microsoft Office Excel 2007 template with macro support;
XLAM – Microsoft Office Excel 2007 plug-in with macro support.
Kaspersky Internet Security 2013 is a suite which will allow you to perform a lot of tweaks. To improve the performance, you can also try some of the below tweaks:
1. Enable 'Concede resources to other applications'
When Kaspersky Internet Security runs scan tasks, this may result in increased workload on the CPU and disk subsystems, which impacts other applications' performance. By default, if such a situation arises, Kaspersky Internet Security pauses virus scan tasks and releases system resources for the user's applications.
2. Uncheck "Perform regular rootkit scans"
While running regular scans for malware is advised, I noticed that Kaspersky will "Perform regular rootkit scans" at my computer startup, slowing down for up to 10 minutes.
I would advise you to uncheck this feature, and instead perform regular manual scans for malware.
What are you computer specifications? Are you experiencing any major slow downs with KIS 2013 installed?